diff --git a/mathmech/PKGBUILD b/mathmech/PKGBUILD
index 7221187..0d2475b 100644
--- a/mathmech/PKGBUILD
+++ b/mathmech/PKGBUILD
@@ -11,7 +11,7 @@ license=('Beerware')
 depends=('qt4' 'qwt')
 makedepends=('cmake' 'automoc4')
 source=(https://github.com/arcan1s/moldyn/releases/download/mm-${pkgver}/${pkgname}-${pkgver}-src.zip)
-md5sums=('e7d983f602fcfd3f390e72ef684fe5e2')
+md5sums=('7b52d5d3cf576f1b6ae88d0e5ab8a2c2')
 _cmakekeys="-DCMAKE_INSTALL_PREFIX=/usr
             -DQWT_INCLUDE_PATH=/usr/include/qwt
             -DQWT_LIBRARY_PATH=/usr/lib
diff --git a/mathmech/agl/src/add_main.c b/mathmech/agl/src/add_main.c
index 9a67b4e..6b0f8bf 100644
--- a/mathmech/agl/src/add_main.c
+++ b/mathmech/agl/src/add_main.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file add_main.c
+ * Source code of agl
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/agl/src/add_main.h b/mathmech/agl/src/add_main.h
index e73134d..09e7080 100644
--- a/mathmech/agl/src/add_main.h
+++ b/mathmech/agl/src/add_main.h
@@ -7,28 +7,22 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file add_main.h
+ * Header of agl
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef ADD_MAIN_H
 #define ADD_MAIN_H
 
-
-/**
- * @file
- */
-
 #include <stdio.h>
 
 #include <mathmech/messages.h>
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn error_checking
- */
-int error_checking (const char *aglinp, const system_info _system_info, 
-                    const char *input, const char *output);
 /**
  * @brief function that checks errors in input variables
  * @code
@@ -46,13 +40,10 @@ int error_checking (const char *aglinp, const system_info _system_info,
  * @return 14             - error in 'aglinp'
  * @return 0              - exit without errors
  */
+int error_checking (const char *aglinp, const system_info _system_info, 
+                    const char *input, const char *output);
 
 
-/**
- * @fn print_message
- */
-int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log, 
-                   const int mode, const char *str);
 /**
  * @brief function that prints message in log and stdout
  * @code
@@ -68,13 +59,10 @@ int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log
  * 
  * @return 0              - exit without errors
  */
+int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log, 
+                   const int mode, const char *str);
 
 
-/**
- * @fn set_defaults
- */
-int set_defaults (char *aglinp, system_info *_system_info, char *input, int *log, char *output, 
-                  int *quiet);
 /**
  * @brief function that sets default values of variables
  * @code
@@ -90,6 +78,8 @@ int set_defaults (char *aglinp, system_info *_system_info, char *input, int *log
  * 
  * @return 0              - exit without errors
  */
+int set_defaults (char *aglinp, system_info *_system_info, char *input, int *log, char *output, 
+                  int *quiet);
 
 
 #endif /* ADD_MAIN_H */
diff --git a/mathmech/agl/src/main.c b/mathmech/agl/src/main.c
index 890858e..2423b7e 100644
--- a/mathmech/agl/src/main.c
+++ b/mathmech/agl/src/main.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file main.c
+ * Source code of agl
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>
diff --git a/mathmech/envir/src/add_main.c b/mathmech/envir/src/add_main.c
index d3109b3..74d56c3 100644
--- a/mathmech/envir/src/add_main.c
+++ b/mathmech/envir/src/add_main.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file add_main.c
+ * Source code of envir
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/envir/src/add_main.h b/mathmech/envir/src/add_main.h
index a5900ef..78cb66f 100644
--- a/mathmech/envir/src/add_main.h
+++ b/mathmech/envir/src/add_main.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file add_main.h
+ * Header of envir
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef ADD_MAIN_H
@@ -16,11 +20,6 @@
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn error_checking
- */
-int error_checking (const system_info _system_info, const char *input, 
-                    const char *output);
 /**
  * @brief function that checks errors in input variables
  * @code
@@ -36,13 +35,10 @@ int error_checking (const system_info _system_info, const char *input,
  * @return 13             - error in 'output'
  * @return 0              - exit without errors
  */
+int error_checking (const system_info _system_info, const char *input, 
+                    const char *output);
 
 
-/**
- * @fn print_message
- */
-int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log, 
-                   const int mode, const char *str);
 /**
  * @brief function that prints message in log and stdout
  * @code
@@ -58,13 +54,10 @@ int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log
  * 
  * @return 0              - exit without errors
  */
+int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log, 
+                   const int mode, const char *str);
 
 
-/**
- * @fn set_defaults
- */
-int set_defaults (system_info *_system_info, char *input, int *log, int *num_of_mol, 
-                  char *output, int *quiet, float *rad);
 /**
  * @brief function that sets default values of variables
  * @code
@@ -82,6 +75,8 @@ int set_defaults (system_info *_system_info, char *input, int *log, int *num_of_
  * 
  * @return 0              - exit without errors
  */
+int set_defaults (system_info *_system_info, char *input, int *log, int *num_of_mol, 
+                  char *output, int *quiet, float *rad);
 
 
 #endif /* ADD_MAIN_H */
diff --git a/mathmech/envir/src/main.c b/mathmech/envir/src/main.c
index 7efa980..7d239cd 100644
--- a/mathmech/envir/src/main.c
+++ b/mathmech/envir/src/main.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file main.c
+ * Source code of envir
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>
diff --git a/mathmech/mathmech/src/aboutwindow.cpp b/mathmech/mathmech/src/aboutwindow.cpp
index 78755e2..380c566 100644
--- a/mathmech/mathmech/src/aboutwindow.cpp
+++ b/mathmech/mathmech/src/aboutwindow.cpp
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file aboutwindow.cpp
+ * Source code of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #include <QKeyEvent>
 
 #include "aboutwindow.h"
diff --git a/mathmech/mathmech/src/aboutwindow.h b/mathmech/mathmech/src/aboutwindow.h
index 9cb565e..0bda13c 100644
--- a/mathmech/mathmech/src/aboutwindow.h
+++ b/mathmech/mathmech/src/aboutwindow.h
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file aboutwindow.h
+ * Header of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #ifndef ABOUTWINDOW_H
 #define ABOUTWINDOW_H
 
diff --git a/mathmech/mathmech/src/agglwindow.cpp b/mathmech/mathmech/src/agglwindow.cpp
index 16628c4..06c32a1 100644
--- a/mathmech/mathmech/src/agglwindow.cpp
+++ b/mathmech/mathmech/src/agglwindow.cpp
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file agglwindow.cpp
+ * Source code of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #include <QDir>
 #include <QFileDialog>
 #include <QKeyEvent>
diff --git a/mathmech/mathmech/src/agglwindow.h b/mathmech/mathmech/src/agglwindow.h
index 38c8e41..ee8da4e 100644
--- a/mathmech/mathmech/src/agglwindow.h
+++ b/mathmech/mathmech/src/agglwindow.h
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file agglwindow.h
+ * Header of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #ifndef AGGLWINDOW_H
 #define AGGLWINDOW_H
 
diff --git a/mathmech/mathmech/src/aglallwindow.cpp b/mathmech/mathmech/src/aglallwindow.cpp
index 7be9cc2..d4e34f6 100644
--- a/mathmech/mathmech/src/aglallwindow.cpp
+++ b/mathmech/mathmech/src/aglallwindow.cpp
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file aglallwindow.cpp
+ * Source code of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #include <QDir>
 #include <QFileDialog>
 #include <QKeyEvent>
diff --git a/mathmech/mathmech/src/aglallwindow.h b/mathmech/mathmech/src/aglallwindow.h
index 226f89b..53e7fdc 100644
--- a/mathmech/mathmech/src/aglallwindow.h
+++ b/mathmech/mathmech/src/aglallwindow.h
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file aglallwindow.h
+ * Header of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #ifndef AGLALLWINDOW_H
 #define AGLALLWINDOW_H
 
diff --git a/mathmech/mathmech/src/atomtypeswindow.cpp b/mathmech/mathmech/src/atomtypeswindow.cpp
index d772f49..5eb898e 100644
--- a/mathmech/mathmech/src/atomtypeswindow.cpp
+++ b/mathmech/mathmech/src/atomtypeswindow.cpp
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file atomtypeswindow.cpp
+ * Source code of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #include <QDir>
 #include <QFileDialog>
 #include <QKeyEvent>
diff --git a/mathmech/mathmech/src/atomtypeswindow.h b/mathmech/mathmech/src/atomtypeswindow.h
index b4574e1..4382a42 100644
--- a/mathmech/mathmech/src/atomtypeswindow.h
+++ b/mathmech/mathmech/src/atomtypeswindow.h
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file atomtypeswindow.h
+ * Header of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #ifndef ATOMTYPESWINDOW_H
 #define ATOMTYPESWINDOW_H
 
diff --git a/mathmech/mathmech/src/clear_items.cpp b/mathmech/mathmech/src/clear_items.cpp
index abb9bf5..3cbf739 100644
--- a/mathmech/mathmech/src/clear_items.cpp
+++ b/mathmech/mathmech/src/clear_items.cpp
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file clear_items.cpp
+ * Source code of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #include "clear_items.h"
 
 #include "mainwindow.h"
diff --git a/mathmech/mathmech/src/clear_items.h b/mathmech/mathmech/src/clear_items.h
index 4b9a789..ffb753d 100644
--- a/mathmech/mathmech/src/clear_items.h
+++ b/mathmech/mathmech/src/clear_items.h
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file clear_items.h
+ * Header of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #ifndef CLEAR_ITEMS_H
 #define CLEAR_ITEMS_H
 
diff --git a/mathmech/mathmech/src/errorwindow.cpp b/mathmech/mathmech/src/errorwindow.cpp
index 74fe6b4..61216bc 100644
--- a/mathmech/mathmech/src/errorwindow.cpp
+++ b/mathmech/mathmech/src/errorwindow.cpp
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file errorwindow.cpp
+ * Source code of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #include "errorwindow.h"
 #include "ui_errorwindow.h"
 
diff --git a/mathmech/mathmech/src/errorwindow.h b/mathmech/mathmech/src/errorwindow.h
index 2f0d114..7b1e610 100644
--- a/mathmech/mathmech/src/errorwindow.h
+++ b/mathmech/mathmech/src/errorwindow.h
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file errorwindow.h
+ * Header of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #ifndef ERRORWINDOW_H
 #define ERRORWINDOW_H
 
diff --git a/mathmech/mathmech/src/helpwindow.cpp b/mathmech/mathmech/src/helpwindow.cpp
index 463a793..c1bf91c 100644
--- a/mathmech/mathmech/src/helpwindow.cpp
+++ b/mathmech/mathmech/src/helpwindow.cpp
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file helpwindow.cpp
+ * Source code of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #include <QDir>
 #include <QFileDialog>
 #include <QKeyEvent>
diff --git a/mathmech/mathmech/src/helpwindow.h b/mathmech/mathmech/src/helpwindow.h
index 20e1428..c5eaf9d 100644
--- a/mathmech/mathmech/src/helpwindow.h
+++ b/mathmech/mathmech/src/helpwindow.h
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file helpwindow.h
+ * Header of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #ifndef HELPWINDOW_H
 #define HELPWINDOW_H
 
diff --git a/mathmech/mathmech/src/main.cpp b/mathmech/mathmech/src/main.cpp
index deac4b3..32910b6 100644
--- a/mathmech/mathmech/src/main.cpp
+++ b/mathmech/mathmech/src/main.cpp
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file main.cpp
+ * Source code of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #include "mainwindow.h"
 #include <QApplication>
 #include <QDir>
diff --git a/mathmech/mathmech/src/mainwindow.cpp b/mathmech/mathmech/src/mainwindow.cpp
index f5c498d..01c57f2 100644
--- a/mathmech/mathmech/src/mainwindow.cpp
+++ b/mathmech/mathmech/src/mainwindow.cpp
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file mainwindow.cpp
+ * Source code of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #include <QFileDialog>
 #include <QDir>
 
diff --git a/mathmech/mathmech/src/mainwindow.h b/mathmech/mathmech/src/mainwindow.h
index ca7deb6..b518657 100644
--- a/mathmech/mathmech/src/mainwindow.h
+++ b/mathmech/mathmech/src/mainwindow.h
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file mainwindow.h
+ * Header of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #ifndef MAINWINDOW_H
 #define MAINWINDOW_H
 
diff --git a/mathmech/mathmech/src/settingswindow.cpp b/mathmech/mathmech/src/settingswindow.cpp
index fbd3190..a2cffac 100644
--- a/mathmech/mathmech/src/settingswindow.cpp
+++ b/mathmech/mathmech/src/settingswindow.cpp
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file settingswindow.cpp
+ * Source code of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #include <QApplication>
 #include <QDir>
 #include <QKeyEvent>
diff --git a/mathmech/mathmech/src/settingswindow.h b/mathmech/mathmech/src/settingswindow.h
index 7f8f2dd..8b9431f 100644
--- a/mathmech/mathmech/src/settingswindow.h
+++ b/mathmech/mathmech/src/settingswindow.h
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file settingswindow.h
+ * Header of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #ifndef SETTINGSWINDOW_H
 #define SETTINGSWINDOW_H
 
diff --git a/mathmech/mathmech/src/start_events.cpp b/mathmech/mathmech/src/start_events.cpp
index 28e59ab..c0029c8 100644
--- a/mathmech/mathmech/src/start_events.cpp
+++ b/mathmech/mathmech/src/start_events.cpp
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file start_events.cpp
+ * Source code of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #include <QDir>
 #include <math.h>
 
diff --git a/mathmech/mathmech/src/start_events.h b/mathmech/mathmech/src/start_events.h
index 460b0a2..1e6d4d8 100644
--- a/mathmech/mathmech/src/start_events.h
+++ b/mathmech/mathmech/src/start_events.h
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file start_events.h
+ * Header of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #ifndef START_EVENTS_H
 #define START_EVENTS_H
 
diff --git a/mathmech/mathmech/src/statgengraphwindow.cpp b/mathmech/mathmech/src/statgengraphwindow.cpp
index f841454..d49f72a 100644
--- a/mathmech/mathmech/src/statgengraphwindow.cpp
+++ b/mathmech/mathmech/src/statgengraphwindow.cpp
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file statgengraphwindow.cpp
+ * Source code of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #include <QDir>
 #include <QFileDialog>
 #include <QKeyEvent>
diff --git a/mathmech/mathmech/src/statgengraphwindow.h b/mathmech/mathmech/src/statgengraphwindow.h
index c02dfa2..a9a3431 100644
--- a/mathmech/mathmech/src/statgengraphwindow.h
+++ b/mathmech/mathmech/src/statgengraphwindow.h
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file statgengraphwindow.h
+ * Header of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #ifndef STATGENGRAPHWINDOW_H
 #define STATGENGRAPHWINDOW_H
 
diff --git a/mathmech/mathmech/src/update_fields.cpp b/mathmech/mathmech/src/update_fields.cpp
index 18cab3f..74351ce 100644
--- a/mathmech/mathmech/src/update_fields.cpp
+++ b/mathmech/mathmech/src/update_fields.cpp
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file update_fields.cpp
+ * Source code of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #include <QDir>
 #include <math.h>
 
diff --git a/mathmech/mathmech/src/update_fields.h b/mathmech/mathmech/src/update_fields.h
index 0e65d74..d6476f2 100644
--- a/mathmech/mathmech/src/update_fields.h
+++ b/mathmech/mathmech/src/update_fields.h
@@ -6,6 +6,14 @@
  * this stuff is worth it, you can buy me a beer in return
  * ----------------------------------------------------------------------------
  */
+/**
+ * @file update_fields.h
+ * Header of mathmech
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
+ */
+
 #ifndef UPDATE_FIELDS_H
 #define UPDATE_FIELDS_H
 
diff --git a/mathmech/mm/include/mathmech/atom_types.h b/mathmech/mm/include/mathmech/atom_types.h
index 3463d5a..6ae214c 100644
--- a/mathmech/mm/include/mathmech/atom_types.h
+++ b/mathmech/mm/include/mathmech/atom_types.h
@@ -7,18 +7,17 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file atom_types.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef ATOM_TYPES_H
 #define ATOM_TYPES_H
 
 
-/**
- * @fn reading_atoms
- */
-int reading_atoms (const char *input_at, int *num_types, int *num_mol, int *num_atoms, 
-                   char *ch_atom_types, int *atom_types, const int total_types);
 /**
  * @brief function that reads atom types from input file
  * @code
@@ -39,6 +38,8 @@ int reading_atoms (const char *input_at, int *num_types, int *num_mol, int *num_
  * @return 3              - memory error
  * @return 0              - exit without errors
  */
+int reading_atoms (const char *input_at, int *num_types, int *num_mol, int *num_atoms, 
+                   char *ch_atom_types, int *atom_types, const int total_types);
 
 
 #endif /* ATOM_TYPES_H */
diff --git a/mathmech/mm/include/mathmech/coords.h b/mathmech/mm/include/mathmech/coords.h
index 2894fa6..76d63c3 100644
--- a/mathmech/mm/include/mathmech/coords.h
+++ b/mathmech/mm/include/mathmech/coords.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file coords.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef COORDS_H
@@ -16,12 +20,6 @@
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn reading_coords
- */
-int reading_coords (const int mode, const char *filename, const int type_inter, 
-                    const int *label_atom, system_info *_system_info, 
-                    int *true_label_mol, atom_info *_atom_info);
 /**
  * @brief function that reads coordinates from special file format
  * @code
@@ -45,6 +43,9 @@ int reading_coords (const int mode, const char *filename, const int type_inter,
  * @return 3              - memory error
  * @return 0              - exit without errors
  */
+int reading_coords (const int mode, const char *filename, const int type_inter, 
+                    const int *label_atom, system_info *_system_info, 
+                    int *true_label_mol, atom_info *_atom_info);
 
 
 #endif /* COORDS_H */
diff --git a/mathmech/mm/include/mathmech/envir_search.h b/mathmech/mm/include/mathmech/envir_search.h
index a0c89a3..b7afbae 100644
--- a/mathmech/mm/include/mathmech/envir_search.h
+++ b/mathmech/mm/include/mathmech/envir_search.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file envir_search.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef ENVIR_SEARCH_H
@@ -16,11 +20,6 @@
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn search_envir
- */
-int search_envir (const int num_of_mol, const system_info _system_info, const float *centr_coords, 
-                  const double rad, int *needed_mol, int *num_needed_mol);
 /**
  * @brief function that searchs environment
  * @code
@@ -37,6 +36,8 @@ int search_envir (const int num_of_mol, const system_info _system_info, const fl
  * 
  * @return 0              - exit without errors
  */
+int search_envir (const int num_of_mol, const system_info _system_info, const float *centr_coords, 
+                  const double rad, int *needed_mol, int *num_needed_mol);
 
 
 #endif /* ENVIR_SEARCH_H */
diff --git a/mathmech/mm/include/mathmech/graph.h b/mathmech/mm/include/mathmech/graph.h
index cf54601..01698fa 100644
--- a/mathmech/mm/include/mathmech/graph.h
+++ b/mathmech/mm/include/mathmech/graph.h
@@ -7,17 +7,17 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file graph.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef GRAPH_H
 #define GRAPH_H
 
 
-/**
- * @fn check_cycle
- */
-int check_cycle (const int N, const int *pn);
 /**
  * @brief function that calculates number of cycles in graph
  * @code
@@ -29,12 +29,9 @@ int check_cycle (const int N, const int *pn);
  * 
  * @return number of cycles
  */
+int check_cycle (const int N, const int *pn);
 
 
-/**
- * @fn check_cycle_size
- */
-int check_cycle_size (const int N, const int *matrix, const int depth, int *n_cycle);
 /**
  * @brief function that returns number of cycles different size
  * @code
@@ -50,12 +47,9 @@ int check_cycle_size (const int N, const int *matrix, const int depth, int *n_cy
  * @return 1              - memory error
  * @return 0              - exit without errors
  */
+int check_cycle_size (const int N, const int *matrix, const int depth, int *n_cycle);
 
 
-/**
- * @fn check_tail
- */
-int check_tail (const int *pn);
 /**
  * @brief function that calculates number of tails
  * @code
@@ -66,12 +60,9 @@ int check_tail (const int *pn);
  * 
  * @return number of tails
  */
+int check_tail (const int *pn);
 
 
-/**
- * @fn graph_analyze
- */
-int graph_analyze (const int N, const int *matrix, const int max_depth, int *iso);
 /**
  * @brief function that analyzes graph isomorhic class
  * @code
@@ -86,6 +77,7 @@ int graph_analyze (const int N, const int *matrix, const int max_depth, int *iso
  * @return 1              - memory error
  * @return 0              - exit without errors
  */
+int graph_analyze (const int N, const int *matrix, const int max_depth, int *iso);
 
 
 #endif /* GRAPH_H */
diff --git a/mathmech/mm/include/mathmech/messages.h b/mathmech/mm/include/mathmech/messages.h
index 7cda964..19154e9 100644
--- a/mathmech/mm/include/mathmech/messages.h
+++ b/mathmech/mm/include/mathmech/messages.h
@@ -7,17 +7,17 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file messages.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef MESSAGES_H
 #define MESSAGES_H
 
 
-/**
- * @fn message
- */
-int message (const int log, const int mode, const char *text, FILE *output);
 /**
  * @brief function that prints messages to output
  * @code
@@ -32,6 +32,7 @@ int message (const int log, const int mode, const char *text, FILE *output);
  * @return 1              - unknown mode
  * @return 0              - exit without errors
  */
+int message (const int log, const int mode, const char *text, FILE *output);
 
 
 #endif /* MESSAGES_H */
diff --git a/mathmech/mm/include/mathmech/print_struct.h b/mathmech/mm/include/mathmech/print_struct.h
index 335c4b5..c443f74 100644
--- a/mathmech/mm/include/mathmech/print_struct.h
+++ b/mathmech/mm/include/mathmech/print_struct.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file print_struct.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef PRINT_STRUCT_H
@@ -16,11 +20,6 @@
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn print_structure
- */
-int print_structure (const char *output, const int num_needed_mol, const int *needed_mol, 
-                     const system_info _system_info, const atom_info *_atom_info);
 /**
  * @brief function that prints structure to pdb file
  * @code
@@ -35,6 +34,8 @@ int print_structure (const char *output, const int num_needed_mol, const int *ne
  * 
  * @return 0              - exit without errors
  */
+int print_structure (const char *output, const int num_needed_mol, const int *needed_mol, 
+                     const system_info _system_info, const atom_info *_atom_info);
 
 
 #endif /* PRINT_STRUCT_H */
diff --git a/mathmech/mm/include/mathmech/print_trj.h b/mathmech/mm/include/mathmech/print_trj.h
index 73773ac..8d02727 100644
--- a/mathmech/mm/include/mathmech/print_trj.h
+++ b/mathmech/mm/include/mathmech/print_trj.h
@@ -7,19 +7,17 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file print_trj.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef PRINT_TRJ_H
 #define PRINT_TRJ_H
 
 
-/**
- * @fn printing_trj
- */
-int printing_trj (const char *filename, const int atoms, const int num_types, const int *num_mol, 
-                  const int *num_atoms, const char *ch_atom_types, const int *atom_types,
-                  const float *coords);
 /**
  * @brief function that prints trajectory snapshots
  * @code
@@ -38,6 +36,9 @@ int printing_trj (const char *filename, const int atoms, const int num_types, co
  * 
  * @return 0              - exit without errors
  */
+int printing_trj (const char *filename, const int atoms, const int num_types, const int *num_mol, 
+                  const int *num_atoms, const char *ch_atom_types, const int *atom_types,
+                  const float *coords);
 
 
 #endif /* PRINT_TRJ_H */
diff --git a/mathmech/mm/include/mathmech/radf.h b/mathmech/mm/include/mathmech/radf.h
index 8b0354e..453f701 100644
--- a/mathmech/mm/include/mathmech/radf.h
+++ b/mathmech/mm/include/mathmech/radf.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file radf.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef RADF_H
@@ -16,11 +20,6 @@
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn search_rdf
- */
-int search_rdf (const system_info _system_info, const atom_info *_atom_info, 
-                const radf_info _radf_info, int *radf);
 /**
  * @brief function that searchs molecule for rdf massive
  * @code
@@ -34,13 +33,10 @@ int search_rdf (const system_info _system_info, const atom_info *_atom_info,
  * 
  * @return 0              - exit without errors
  */
+int search_rdf (const system_info _system_info, const atom_info *_atom_info, 
+                const radf_info _radf_info, int *radf);
 
 
-/**
- * @fn search_rdf_centr
- */
-int search_rdf_centr (const system_info _system_info, const atom_info *_atom_info, 
-                      const radf_info _radf_info, int *radf);
 /**
  * @brief function that searchs molecule for rdf massive by centered coordinates
  * @code
@@ -55,13 +51,10 @@ int search_rdf_centr (const system_info _system_info, const atom_info *_atom_inf
  * @return 0              - exit without errors
  * @return 1              - error in set center (missing atoms)
  */
+int search_rdf_centr (const system_info _system_info, const atom_info *_atom_info, 
+                      const radf_info _radf_info, int *radf);
 
 
-/**
- * @fn search_radf
- */
-int search_radf (const system_info _system_info, const atom_info *_atom_info, 
-                 const radf_info _radf_info, int *radf);
 /**
  * @brief function that searchs molecule for radf massive
  * @code
@@ -76,6 +69,8 @@ int search_radf (const system_info _system_info, const atom_info *_atom_info,
  * @return 0              - exit without errors
  * @return 1              - error in set center (missing atoms)
  */
+int search_radf (const system_info _system_info, const atom_info *_atom_info, 
+                 const radf_info _radf_info, int *radf);
 
 
 #endif /* RADF_H */
diff --git a/mathmech/mm/include/mathmech/radf_proc.h b/mathmech/mm/include/mathmech/radf_proc.h
index 6e9d532..497bbef 100644
--- a/mathmech/mm/include/mathmech/radf_proc.h
+++ b/mathmech/mm/include/mathmech/radf_proc.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file radf_proc.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef RADF_PROC_H
@@ -16,12 +20,6 @@
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn print_result
- */
-int print_result (const char *output, const int matrix, const int mode, 
-                  const system_info _system_info, const radf_info _radf_info,
-                  const int *radf);
 /**
  * @brief function that print result to output file
  * @code
@@ -37,6 +35,9 @@ int print_result (const char *output, const int matrix, const int mode,
  * 
  * @return 0              - exit without errors
  */
+int print_result (const char *output, const int matrix, const int mode, 
+                  const system_info _system_info, const radf_info _radf_info,
+                  const int *radf);
 
 
 #endif /* RADF_PROC_H */
diff --git a/mathmech/mm/include/mathmech/read_agl.h b/mathmech/mm/include/mathmech/read_agl.h
index 91e1fe1..f03dd82 100644
--- a/mathmech/mm/include/mathmech/read_agl.h
+++ b/mathmech/mm/include/mathmech/read_agl.h
@@ -7,17 +7,17 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file read_agl.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef READ_AGL_H
 #define READ_AGL_H
 
 
-/**
- * @fn reading_agl
- */
-int reading_agl (const char *aglinp, int *num_needed_mol, char *agl_class, int *needed_mol);
 /**
  * @brief function that reads agglomerate from statgen-formated file
  * @code
@@ -31,6 +31,7 @@ int reading_agl (const char *aglinp, int *num_needed_mol, char *agl_class, int *
  * 
  * @return 0              - exit without errors
  */
+int reading_agl (const char *aglinp, int *num_needed_mol, char *agl_class, int *needed_mol);
 
 
 #endif /* READ_AGL_H */
diff --git a/mathmech/mm/include/mathmech/read_gmx.h b/mathmech/mm/include/mathmech/read_gmx.h
index 56962ab..48495cf 100644
--- a/mathmech/mm/include/mathmech/read_gmx.h
+++ b/mathmech/mm/include/mathmech/read_gmx.h
@@ -7,17 +7,17 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file read_gmx.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef READ_GMX_H
 #define READ_GMX_H
 
 
-/**
- * @fn translate_coords
- */
-int translate_coords (const float coords, const float cell, float *trans);
 /**
  * @brief funtion that translates coordinate
  * @code
@@ -30,14 +30,9 @@ int translate_coords (const float coords, const float cell, float *trans);
  * 
  * @return 0              - exit without errors
  */
+int translate_coords (const float coords, const float cell, float *trans);
 
 
-/**
- * @fn rw_gmx
- */
-int rw_gmx (const char *input, const int step, const char *output, const int num_types, 
-            const int *num_mol, const int *num_atoms, const char *ch_atom_types, 
-            const int *atom_types, float *coords);
 /**
  * @brief function that read GROMACS trajectory file and write to output
  * @code
@@ -58,6 +53,9 @@ int rw_gmx (const char *input, const int step, const char *output, const int num
  * @return 1              - file does not exist
  * @return 0              - exit without errors
  */
+int rw_gmx (const char *input, const int step, const char *output, const int num_types, 
+            const int *num_mol, const int *num_atoms, const char *ch_atom_types, 
+            const int *atom_types, float *coords);
 
 
 #endif /* READ_GMX_H */
diff --git a/mathmech/mm/include/mathmech/read_puma.h b/mathmech/mm/include/mathmech/read_puma.h
index 1cd4eb4..9b59fe0 100644
--- a/mathmech/mm/include/mathmech/read_puma.h
+++ b/mathmech/mm/include/mathmech/read_puma.h
@@ -7,19 +7,17 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file read_puma.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef READ_PUMA_H
 #define READ_PUMA_H
 
 
-/**
- * @fn rw_puma
- */
-int rw_puma (const char *input, const int step, const char *output, const int num_types, 
-             const int *num_mol, const int *num_atoms, const char *ch_atom_types, 
-             const int *atom_types, float *coords);
 /**
  * @brief function that read PUMA trajectory file and write to output
  * @code
@@ -40,6 +38,9 @@ int rw_puma (const char *input, const int step, const char *output, const int nu
  * @return 1              - file does not exist
  * @return 0              - exit without errors
  */
+int rw_puma (const char *input, const int step, const char *output, const int num_types, 
+             const int *num_mol, const int *num_atoms, const char *ch_atom_types, 
+             const int *atom_types, float *coords);
 
 
 #endif /* READ_PUMA_H */
diff --git a/mathmech/mm/include/mathmech/select_mol.h b/mathmech/mm/include/mathmech/select_mol.h
index 4bcc4ca..3bd3c16 100644
--- a/mathmech/mm/include/mathmech/select_mol.h
+++ b/mathmech/mm/include/mathmech/select_mol.h
@@ -7,17 +7,17 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file select_mol.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef SELECT_MOL_H
 #define SELECT_MOL_H
 
 
-/**
- * @fn select_molecule
- */
-int select_molecule (const float *centr_coords, const int num_needed_mol, int *needed_mol);
 /**
  * @brief function that selects molecules from array of translated molecules
  * @code
@@ -30,6 +30,7 @@ int select_molecule (const float *centr_coords, const int num_needed_mol, int *n
  * 
  * @return 0              - exit without errors
  */
+int select_molecule (const float *centr_coords, const int num_needed_mol, int *needed_mol);
 
 
 #endif /* SELECT_MOL_H */
diff --git a/mathmech/mm/include/mathmech/set_center.h b/mathmech/mm/include/mathmech/set_center.h
index fc08134..be3cdd1 100644
--- a/mathmech/mm/include/mathmech/set_center.h
+++ b/mathmech/mm/include/mathmech/set_center.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file set_center.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef SET_CENTER_H
@@ -16,11 +20,6 @@
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn set_center
- */
-int set_center (const system_info _system_info, const atom_info *_atom_info, 
-                float *centr_coords);
 /**
  * @brief function that searchs center mass of molecules
  * @code
@@ -33,6 +32,8 @@ int set_center (const system_info _system_info, const atom_info *_atom_info,
  * 
  * @return 0              - exit without errors
  */
+int set_center (const system_info _system_info, const atom_info *_atom_info, 
+                float *centr_coords);
 
 
 #endif /* SET_CENTER_H */
diff --git a/mathmech/mm/include/mathmech/stat_print.h b/mathmech/mm/include/mathmech/stat_print.h
index 0ef35be..0d9610c 100644
--- a/mathmech/mm/include/mathmech/stat_print.h
+++ b/mathmech/mm/include/mathmech/stat_print.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file stat_print.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef STAT_PRINT_H
@@ -16,13 +20,6 @@
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn printing_agl
- */
-int printing_agl (const char *input, const char *output, const int *connect, 
-                  const system_info _system_info, const int *true_label_mol, 
-                  const int *num_mol_agl, const int *agl, const int *stat, 
-                  const int max_depth, int *type_agl);
 /**
  * @brief function that prints agglomerates to output file
  * @code
@@ -44,6 +41,10 @@ int printing_agl (const char *input, const char *output, const int *connect,
  * @return 1              - memory error
  * @return 0              - exit without errors
  */
+int printing_agl (const char *input, const char *output, const int *connect, 
+                  const system_info _system_info, const int *true_label_mol, 
+                  const int *num_mol_agl, const int *agl, const int *stat, 
+                  const int max_depth, int *type_agl);
 
 
 #endif /* STAT_PRINT_H */
diff --git a/mathmech/mm/include/mathmech/stat_select.h b/mathmech/mm/include/mathmech/stat_select.h
index 25adab4..3fcabac 100644
--- a/mathmech/mm/include/mathmech/stat_select.h
+++ b/mathmech/mm/include/mathmech/stat_select.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file stat_select.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef STAT_SELECT_H
@@ -16,11 +20,6 @@
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn create_matrix
- */
-int create_matrix (const system_info _system_info, const atom_info *_atom_info, 
-                   const int num_of_inter, const float *crit, int *connect);
 /**
  * @brief function that creates connectivity matrix
  * @code
@@ -36,6 +35,8 @@ int create_matrix (const system_info _system_info, const atom_info *_atom_info,
  * @return 1              - memory error
  * @return 0              - exit without errors
  */
+int create_matrix (const system_info _system_info, const atom_info *_atom_info, 
+                   const int num_of_inter, const float *crit, int *connect);
 
 
 #endif /* STAT_SELECT_H */
diff --git a/mathmech/mm/include/mathmech/stat_sort.h b/mathmech/mm/include/mathmech/stat_sort.h
index cc2329a..9e97054 100644
--- a/mathmech/mm/include/mathmech/stat_sort.h
+++ b/mathmech/mm/include/mathmech/stat_sort.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file stat_sort.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef STAT_SORT_H
@@ -16,11 +20,6 @@
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn proc_matrix
- */
-int proc_matrix (const system_info _system_info, const int *connect, int *num_mol_agl, 
-                 int *agl, int *stat, int *stat_all);
 /**
  * @brief function that processes connectivity matrix
  * @code
@@ -38,6 +37,8 @@ int proc_matrix (const system_info _system_info, const int *connect, int *num_mo
  * @return 1              - memory error
  * @return 0              - exit without errors
  */
+int proc_matrix (const system_info _system_info, const int *connect, int *num_mol_agl, 
+                 int *agl, int *stat, int *stat_all);
 
 
 #endif /* STAT_SORT_H */
diff --git a/mathmech/mm/include/mathmech/summary_stat.h b/mathmech/mm/include/mathmech/summary_stat.h
index 18e9b62..1bfeb70 100644
--- a/mathmech/mm/include/mathmech/summary_stat.h
+++ b/mathmech/mm/include/mathmech/summary_stat.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file summary_stat.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef SUMMARY_STAT_H
@@ -16,11 +20,6 @@
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn summary_statistic
- */
-int summary_statistic (const char *filename, const system_info _system_info, 
-                       const int max_depth, const int *type_agl, const int *stat_all);
 /**
  * @brief function that prints summary statistic
  * @code
@@ -36,6 +35,8 @@ int summary_statistic (const char *filename, const system_info _system_info,
  * 
  * @return 0              - exit without errors
  */
+int summary_statistic (const char *filename, const system_info _system_info, 
+                       const int max_depth, const int *type_agl, const int *stat_all);
 
 
 #endif /* SUMMARY_STAT_H */
diff --git a/mathmech/mm/include/mathmech/var_types.h b/mathmech/mm/include/mathmech/var_types.h
index c7da137..c3410f3 100644
--- a/mathmech/mm/include/mathmech/var_types.h
+++ b/mathmech/mm/include/mathmech/var_types.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file var_types.h
+ * Header of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef VAR_TYPES_H
@@ -16,6 +20,15 @@
 
 /**
  * @struct atom_info
+ * @brief atom information structure
+ * @var atom_info::label_mol
+ * massive of numbers of molecule for atoms
+ * @var atom_info::type_atoms
+ * massive of atom types
+ * @var atom_info::coords
+ * massive of coordinates
+ * @var atom_info::ch_type_atoms
+ * massive of char atom types
  */
 typedef struct
 {
@@ -24,17 +37,23 @@ typedef struct
   char ch_type_atoms[2];
   float coords[3];
 } atom_info;
-/**
- * @brief atom information structure
- * @var label_mol         massive of numbers of molecule for atoms
- * @var type_atoms        massive of atom types
- * @var coords            massive of coordinates
- * @var ch_type_atoms     massive of char atom types
- */
 
 
 /**
  * @struct radf_info
+ * @brief radf information structure
+ * @var radf_info::r_min
+ * minimal radius
+ * @var radf_info::r_max
+ * maximal radius
+ * @var radf_info::r_step
+ * radius step
+ * @var radf_info::ang_min
+ * minimal angle
+ * @var radf_info::ang_max
+ * minimal angle
+ * @var radf_info::ang_step
+ * angle step
  */
 typedef struct
 {
@@ -45,19 +64,21 @@ typedef struct
   float ang_max;
   float ang_step;
 } radf_info;
-/**
- * @brief radf information structure
- * @var r_min             minimal radius
- * @var r_max             maximal radius
- * @var r_step            radius step
- * @var ang_min           minimal angle
- * @var ang_max           minimal angle
- * @var ang_step          angle step
- */
 
 
 /**
  * @struct system_info
+ * @brief system information structure
+ * @var system_info::from
+ * last trajectory step
+ * @var system_info::to
+ * first trajectory step
+ * @var system_info::cell
+ * cell size
+ * @var system_info::num_atoms
+ * number of atoms
+ * @var system_info::num_mol
+ * number of molecules
  */
 typedef struct
 {
@@ -67,14 +88,6 @@ typedef struct
   int num_atoms;
   int num_mol;
 } system_info;
-/**
- * @brief system information structure
- * @var from              last trajectory step
- * @var to                first trajectory step
- * @var cell              cell size
- * @var num_atoms         number of atoms
- * @var num_mol           number of molecules
- */
 
 
 #endif /* VAR_TYPES_H */
diff --git a/mathmech/mm/src/atom_types.c b/mathmech/mm/src/atom_types.c
index 87fe016..53631be 100644
--- a/mathmech/mm/src/atom_types.c
+++ b/mathmech/mm/src/atom_types.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file atom_types.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/mm/src/coords.c b/mathmech/mm/src/coords.c
index 359cffa..ac37758 100644
--- a/mathmech/mm/src/coords.c
+++ b/mathmech/mm/src/coords.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file coords.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/mm/src/envir_search.c b/mathmech/mm/src/envir_search.c
index 6ef0510..f6d54ec 100644
--- a/mathmech/mm/src/envir_search.c
+++ b/mathmech/mm/src/envir_search.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file envir_search.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>
diff --git a/mathmech/mm/src/graph.c b/mathmech/mm/src/graph.c
index 6f44803..cfb5da3 100644
--- a/mathmech/mm/src/graph.c
+++ b/mathmech/mm/src/graph.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file graph.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>
diff --git a/mathmech/mm/src/main.c b/mathmech/mm/src/main.c
index cfd71e1..0514603 100644
--- a/mathmech/mm/src/main.c
+++ b/mathmech/mm/src/main.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file main.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>
diff --git a/mathmech/mm/src/messages.c b/mathmech/mm/src/messages.c
index e90530b..4458639 100644
--- a/mathmech/mm/src/messages.c
+++ b/mathmech/mm/src/messages.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file messages.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/mm/src/print_struct.c b/mathmech/mm/src/print_struct.c
index 8ae9bbd..a0b33b7 100644
--- a/mathmech/mm/src/print_struct.c
+++ b/mathmech/mm/src/print_struct.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file print_struct.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/mm/src/print_trj.c b/mathmech/mm/src/print_trj.c
index e980b0e..ecf8cb7 100644
--- a/mathmech/mm/src/print_trj.c
+++ b/mathmech/mm/src/print_trj.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file print_trj.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/mm/src/radf.c b/mathmech/mm/src/radf.c
index b5454e7..22db8db 100644
--- a/mathmech/mm/src/radf.c
+++ b/mathmech/mm/src/radf.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file radf.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>
diff --git a/mathmech/mm/src/radf_proc.c b/mathmech/mm/src/radf_proc.c
index ed48acf..f016c15 100644
--- a/mathmech/mm/src/radf_proc.c
+++ b/mathmech/mm/src/radf_proc.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file radf_proc.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>
diff --git a/mathmech/mm/src/read_agl.c b/mathmech/mm/src/read_agl.c
index 9d83459..9be5cf6 100644
--- a/mathmech/mm/src/read_agl.c
+++ b/mathmech/mm/src/read_agl.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file read_agl.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/mm/src/read_gmx.c b/mathmech/mm/src/read_gmx.c
index 1274abb..4e9d4fa 100644
--- a/mathmech/mm/src/read_gmx.c
+++ b/mathmech/mm/src/read_gmx.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file read_gmx.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>
diff --git a/mathmech/mm/src/read_puma.c b/mathmech/mm/src/read_puma.c
index 12757ba..b8c2634 100644
--- a/mathmech/mm/src/read_puma.c
+++ b/mathmech/mm/src/read_puma.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file read_puma.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/mm/src/select_mol.c b/mathmech/mm/src/select_mol.c
index a1a624c..27fea64 100644
--- a/mathmech/mm/src/select_mol.c
+++ b/mathmech/mm/src/select_mol.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file select_mol.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>
diff --git a/mathmech/mm/src/set_center.c b/mathmech/mm/src/set_center.c
index ff8393f..7a4a05c 100644
--- a/mathmech/mm/src/set_center.c
+++ b/mathmech/mm/src/set_center.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file set_center.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <mathmech/set_center.h>
diff --git a/mathmech/mm/src/stat_print.c b/mathmech/mm/src/stat_print.c
index 3490d51..a3fba65 100644
--- a/mathmech/mm/src/stat_print.c
+++ b/mathmech/mm/src/stat_print.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file stat_print.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/mm/src/stat_select.c b/mathmech/mm/src/stat_select.c
index 8c7d195..8aa6caa 100644
--- a/mathmech/mm/src/stat_select.c
+++ b/mathmech/mm/src/stat_select.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file stat_select.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>
diff --git a/mathmech/mm/src/stat_sort.c b/mathmech/mm/src/stat_sort.c
index 7bcf0da..db7bd46 100644
--- a/mathmech/mm/src/stat_sort.c
+++ b/mathmech/mm/src/stat_sort.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file stat_sort.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdlib.h>
diff --git a/mathmech/mm/src/summary_stat.c b/mathmech/mm/src/summary_stat.c
index 2051779..150a146 100644
--- a/mathmech/mm/src/summary_stat.c
+++ b/mathmech/mm/src/summary_stat.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file summary_stat.c
+ * Source code of mathmech library
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/radf/src/add_main.c b/mathmech/radf/src/add_main.c
index 9b6697c..7bb66c0 100644
--- a/mathmech/radf/src/add_main.c
+++ b/mathmech/radf/src/add_main.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file add_main.c
+ * Source code of radf
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/radf/src/add_main.h b/mathmech/radf/src/add_main.h
index 66b61c1..c2fcb62 100644
--- a/mathmech/radf/src/add_main.h
+++ b/mathmech/radf/src/add_main.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file add_main.h
+ * Header of radf
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef ADD_MAIN_H
@@ -16,11 +20,6 @@
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn error_checking
- */
-int error_checking (const char *input, const int num_needed_at, const int *needed_at, 
-                    const char *output, const system_info _system_info);
 /**
  * @brief function that checks errors in input variables
  * @code
@@ -41,13 +40,10 @@ int error_checking (const char *input, const int num_needed_at, const int *neede
  * @return 16             - error in 'needed_at'
  * @return 0              - exit without errors
  */
+int error_checking (const char *input, const int num_needed_at, const int *needed_at, 
+                    const char *output, const system_info _system_info);
 
 
-/**
- * @fn print_message
- */
-int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log, 
-                   const int mode, const char *str);
 /**
  * @brief function that prints message in log and stdout
  * @code
@@ -63,14 +59,10 @@ int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log
  * 
  * @return 0              - exit without errors
  */
+int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log, 
+                   const int mode, const char *str);
 
 
-/**
- * @fn printing_head
- */
-int printing_head (const char *output, const int log, const int quiet, const int matrix, 
-                   const char *input, const system_info _system_info, const int mode, 
-                   const radf_info _radf_info, const int *needed_at);
 /**
  * @brief function that prints header in output file
  * @code
@@ -90,13 +82,11 @@ int printing_head (const char *output, const int log, const int quiet, const int
  * 
  * @return 0              - exit without errors
  */
+int printing_head (const char *output, const int log, const int quiet, const int matrix, 
+                   const char *input, const system_info _system_info, const int mode, 
+                   const radf_info _radf_info, const int *needed_at);
 
 
-/**
- * @fn set_defaults
- */
-int set_defaults (system_info *_system_info, radf_info *_radf_info, char *input, 
-                  int *log, int *matrix, char *output, int *quiet);
 /**
  * @brief function that sets default values of variables
  * @code
@@ -112,6 +102,8 @@ int set_defaults (system_info *_system_info, radf_info *_radf_info, char *input,
  * 
  * @return 0              - exit without errors
  */
+int set_defaults (system_info *_system_info, radf_info *_radf_info, char *input, 
+                  int *log, int *matrix, char *output, int *quiet);
 
 
 #endif /* ADD_MAIN_H */
diff --git a/mathmech/radf/src/main.c b/mathmech/radf/src/main.c
index 12410d8..129cb7d 100644
--- a/mathmech/radf/src/main.c
+++ b/mathmech/radf/src/main.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file main.c
+ * Source code of radf
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>
diff --git a/mathmech/statgen/src/add_main.c b/mathmech/statgen/src/add_main.c
index 3270d0b..62c6799 100644
--- a/mathmech/statgen/src/add_main.c
+++ b/mathmech/statgen/src/add_main.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file add_main.c
+ * Source code of statgen
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/statgen/src/add_main.h b/mathmech/statgen/src/add_main.h
index 5387318..a7947a8 100644
--- a/mathmech/statgen/src/add_main.h
+++ b/mathmech/statgen/src/add_main.h
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file add_main.h
+ * Header of statgen
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef ADD_MAIN_H
@@ -16,11 +20,6 @@
 #include <mathmech/var_types.h>
 
 
-/**
- * @fn error_checking
- */
-int error_checking (const system_info _system_info, const char *input, const int max_depth, 
-                    const int num_of_inter, const char *output, const int type_inter);
 /**
  * @brief function that checks errors in input variables
  * @code
@@ -43,15 +42,10 @@ int error_checking (const system_info _system_info, const char *input, const int
  * @return 19             - error in 'max_depth'
  * @return 0              - exit without errors
  */
+int error_checking (const system_info _system_info, const char *input, const int max_depth, 
+                    const int num_of_inter, const char *output, const int type_inter);
 
 
-/**
- * @fn printing_head
- */
-int printing_head (const char *output, const int log, const int quiet, 
-                   const char *input, const system_info _system_info,
-                   const int type_inter, const int *label_atom, 
-                   const int num_of_inter, const float *crit, const int max_depth);
 /**
  * @brief function that prints header in output file
  * @code
@@ -72,13 +66,12 @@ int printing_head (const char *output, const int log, const int quiet,
  * 
  * @return 0              - exit without errors
  */
+int printing_head (const char *output, const int log, const int quiet, 
+                   const char *input, const system_info _system_info,
+                   const int type_inter, const int *label_atom, 
+                   const int num_of_inter, const float *crit, const int max_depth);
 
 
-/**
- * @fn print_message
- */
-int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log, 
-                   const int mode, const char *str);
 /**
  * @brief function that prints message in log and stdout
  * @code
@@ -94,13 +87,10 @@ int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log
  * 
  * @return 0              - exit without errors
  */
+int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log, 
+                   const int mode, const char *str);
 
 
-/**
- * @fn set_defaults
- */
-int set_defaults (system_info *_system_info, char *input, int *log, int *max_depth, 
-                  int *num_of_inter, char *output, int *type_inter, int *quiet);
 /**
  * @brief function that sets default values of variables
  * @code
@@ -119,6 +109,8 @@ int set_defaults (system_info *_system_info, char *input, int *log, int *max_dep
  * 
  * @return 0              - exit without errors
  */
+int set_defaults (system_info *_system_info, char *input, int *log, int *max_depth, 
+                  int *num_of_inter, char *output, int *type_inter, int *quiet);
 
 
 #endif /* ADD_MAIN_H */
diff --git a/mathmech/statgen/src/main.c b/mathmech/statgen/src/main.c
index d419521..7543724 100644
--- a/mathmech/statgen/src/main.c
+++ b/mathmech/statgen/src/main.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file main.c
+ * Source code of statgen
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>
diff --git a/mathmech/trj/src/add_main.c b/mathmech/trj/src/add_main.c
index 3ef24db..16ebb23 100644
--- a/mathmech/trj/src/add_main.c
+++ b/mathmech/trj/src/add_main.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file add_main.c
+ * Source code of trj
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/trj/src/add_main.h b/mathmech/trj/src/add_main.h
index 9197d98..21abaed 100644
--- a/mathmech/trj/src/add_main.h
+++ b/mathmech/trj/src/add_main.h
@@ -7,18 +7,17 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file add_main.c
+ * Header of trj
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef ADD_MAIN_H
 #define ADD_MAIN_H
 
 
-/**
- * @fn error_checking
- */
-int error_checking (const char *input, const char *input_at, const char *output, 
-                    const int step, const int type);
 /**
  * @brief function that checks errors in input variables
  * @code
@@ -38,13 +37,10 @@ int error_checking (const char *input, const char *input_at, const char *output,
  * @return 15             - error in 'type'
  * @return 0              - exit without errors
  */
+int error_checking (const char *input, const char *input_at, const char *output, 
+                    const int step, const int type);
 
 
-/**
- * @fn print_message
- */
-int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log, 
-                   const int mode, const char *str);
 /**
  * @brief function that prints message in log and stdout
  * @code
@@ -60,13 +56,10 @@ int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log
  * 
  * @return 0              - exit without errors
  */
+int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log, 
+                   const int mode, const char *str);
 
 
-/**
- * @fn set_defaults
- */
-int set_defaults (char *input, char *input_at, int *log, char *output, int *step, 
-                  int *total_types, int *type, int *quiet);
 /**
  * @brief function that sets default values of variables
  * @code
@@ -84,6 +77,8 @@ int set_defaults (char *input, char *input_at, int *log, char *output, int *step
  * 
  * @return 0              - exit without errors
  */
+int set_defaults (char *input, char *input_at, int *log, char *output, int *step, 
+                  int *total_types, int *type, int *quiet);
 
 
 #endif /* ADD_MAIN_H */
diff --git a/mathmech/trj/src/main.c b/mathmech/trj/src/main.c
index 93672aa..2731d2d 100644
--- a/mathmech/trj/src/main.c
+++ b/mathmech/trj/src/main.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file main.c
+ * Source code of trj
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>
diff --git a/mathmech/trj2pdb/src/add_main.c b/mathmech/trj2pdb/src/add_main.c
index 7422206..9fe71a6 100644
--- a/mathmech/trj2pdb/src/add_main.c
+++ b/mathmech/trj2pdb/src/add_main.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file add_main.c
+ * Source code of trj2pdb
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <stdio.h>
diff --git a/mathmech/trj2pdb/src/add_main.h b/mathmech/trj2pdb/src/add_main.h
index 6c36331..26275ca 100644
--- a/mathmech/trj2pdb/src/add_main.h
+++ b/mathmech/trj2pdb/src/add_main.h
@@ -7,17 +7,17 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file add_main.h
+ * Header of trj2pdb
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #ifndef ADD_MAIN_H
 #define ADD_MAIN_H
 
 
-/**
- * @fn error_checking
- */
-int error_checking (const const char *input, const char *output);
 /**
  * @brief function that checks errors in input variables
  * @code
@@ -33,13 +33,9 @@ int error_checking (const const char *input, const char *output);
  * @return 12             - error in 'output'
  * @return 0              - exit without errors
  */
+int error_checking (const const char *input, const char *output);
 
 
-/**
- * @fn print_message
- */
-int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log, 
-                   const int mode, const char *str);
 /**
  * @brief function that prints message in log and stdout
  * @code
@@ -55,12 +51,10 @@ int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log
  * 
  * @return 0              - exit without errors
  */
+int print_message (const int quiet, FILE *std_output, const int log, FILE *f_log, 
+                   const int mode, const char *str);
 
 
-/**
- * @fn set_defaults
- */
-int set_defaults (char *input, int *log, char *output, int *quiet);
 /**
  * @brief function that sets default values of variables
  * @code
@@ -74,6 +68,7 @@ int set_defaults (char *input, int *log, char *output, int *quiet);
  * 
  * @return 0              - exit without errors
  */
+int set_defaults (char *input, int *log, char *output, int *quiet);
 
 
 #endif /* ADD_MAIN_H */
diff --git a/mathmech/trj2pdb/src/main.c b/mathmech/trj2pdb/src/main.c
index 0451d95..e4cabf8 100644
--- a/mathmech/trj2pdb/src/main.c
+++ b/mathmech/trj2pdb/src/main.c
@@ -7,7 +7,11 @@
  * ----------------------------------------------------------------------------
  */
 /**
- * @file
+ * @file main.c
+ * Source code of trj2pdb
+ * @author Evgeniy Alekseev (arcanis)
+ * @copyright Beerware
+ * @bug No known bugs
  */
 
 #include <math.h>