diff --git a/src/ast/ast.h b/src/ast/ast.h
index 0fbc9b3b..816a87e2 100644
--- a/src/ast/ast.h
+++ b/src/ast/ast.h
@@ -1,7 +1,7 @@
 /**
  * \file ast.h
  * \brief Represent a node of the AST.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
diff --git a/src/execute/ast_eval.c b/src/execute/ast_eval.c
index 801645dc..18fb6a94 100644
--- a/src/execute/ast_eval.c
+++ b/src/execute/ast_eval.c
@@ -1,7 +1,7 @@
 /**
  * \file ast_eval.c
  * \brief Evaluate the AST.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
@@ -21,6 +21,7 @@
 // error else
 
 /**
+ * \struct builtin_function
  * \brief Structure representing a builtin function.
  */
 struct builtin_function
@@ -29,10 +30,20 @@ struct builtin_function
     int (*fun)(struct ast_node *);
 };
 
+/**
+ * \struct builtin_function
+ * \brief Structure representing a builtin function.
+*/
 struct builtin_function builtin[] = { { .name = "echo", .fun = echo_fun },
                                       { .name = "true", .fun = true_fun },
                                       { .name = "false", .fun = false_fun } };
 
+/**
+ * \brief Evaluate the while loop
+ * \param node The AST to evaluate.
+ * \param logger_enabled Whether the logger is enabled or not.
+ * \return The exit status of the last command.
+*/
 int exec_cmd(struct ast_node *node, bool logger_enabled)
 {
     int pid = fork();
@@ -83,6 +94,12 @@ int ast_command(struct ast_node *node, bool logger_enabled)
     return match_ast(node->children[0], logger_enabled);
 }
 
+/**
+ * \brief Evaluate simple command from ast
+ * \param node The AST to evaluate.
+ * \param logger_enabled Whether the logger is enabled or not.
+ * \return The exit status of the last command.
+*/
 int ast_eval_simple_command(struct ast_node *node, bool logger_enabled)
 {
     if (node->children[0]->type == AST_WORD_ASSIGNMENT)
@@ -100,6 +117,12 @@ int ast_eval_simple_command(struct ast_node *node, bool logger_enabled)
     return exec_cmd(node, logger_enabled);
 }
 
+/**
+ * \brief Evaluate condition from ast
+ * \param node The AST to evaluate.
+ * \param logger_enabled Whether the logger is enabled or not.
+ * \return The exit status of the last command.
+*/
 int ast_eval_condition(struct ast_node *node, bool logger_enabled)
 {
     int cond = match_ast(node->children[0], logger_enabled);
@@ -117,6 +140,12 @@ int ast_eval_condition(struct ast_node *node, bool logger_enabled)
     }
 }
 
+/**
+ * \brief Evaluate command list from ast
+ * \param node The AST to evaluate.
+ * \param logger_enabled Whether the logger is enabled or not.
+ * \return The exit status of the last command.
+*/
 int ast_eval_command_list(struct ast_node *node, bool logger_enabled)
 {
     int status = 0;
@@ -158,4 +187,4 @@ int match_ast(struct ast_node *node, bool logger_enabled)
     default:
         return -1;
     }
-}
\ No newline at end of file
+}
diff --git a/src/execute/ast_eval.h b/src/execute/ast_eval.h
index 5688c088..98b9c52d 100644
--- a/src/execute/ast_eval.h
+++ b/src/execute/ast_eval.h
@@ -1,7 +1,7 @@
 /**
  * \file ast_eval.h
  * \brief Evaluate the AST.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
@@ -15,17 +15,74 @@
 #include "options/options.h"
 
 /**
- * \brief Evaluates the given AST and returns the exit status of the last
- * command. \param node The AST to evaluate. \param logger_enabled Whether the
- * logger is enabled or not. \return The exit status of the last command.
+ * \brief Evaluate the given AST
+ * \param node The AST to evaluate.
+ * \param logger_enabled Whether the logger is enabled or not.
+ * \return The exit status of the last command.
  */
 int match_ast(struct ast_node *node, bool logger_enabled);
+
+/**
+ * \brief Evaluate the while loop
+ * \param node The AST to evaluate.
+ * \param logger_enabled Whether the logger is enabled or not.
+ * \return The exit status of the last command.
+ */
 int while_loop(struct ast_node *node, bool logger_enabled);
+
+/**
+ * \brief Evaluate the until loop
+ * \param node The AST to evaluate.
+ * \param logger_enabled Whether the logger is enabled or not.
+ * \return The exit status of the last command.
+*/
 int until_loop(struct ast_node *node, bool logger_enabled);
+
+/**
+ * \brief Evaluate the for loop
+ * \param node The AST to evaluate.
+ * \param logger_enabled Whether the logger is enabled or not.
+ * \return The exit status of the last command.
+*/
 int for_loop(struct ast_node *node, bool logger_enabled);
+
+/**
+ * \brief Pipeline evaluation.
+ * \param node The AST to evaluate.
+ * \param logger_enabled Whether the logger is enabled or not.
+ * \return The exit status of the last command.
+*/
 int pipeline_eval(struct ast_node *node, bool logger_enabled);
+
+/**
+ * \brief Evaluate and_or
+ * \param node The AST to evaluate.
+ * \param logger_enabled Whether the logger is enabled or not.
+ * \return The exit status of the last command.
+ */
 int ast_and_or(struct ast_node *node, bool logger_enabled);
+
+/**
+ * \brief Evaluate the ast assignement
+ * \param node The AST to evaluate.
+ * \param logger_enabled Whether the logger is enabled or not.
+ * \return The exit status of the last command.
+ */
 int ast_eval_assignment(struct ast_node *node, bool logger_enabled);
+
+/**
+ * \brief Evaluate command from ast
+ * \param node The AST to evaluate.
+ * \param logger_enabled Whether the logger is enabled or not.
+ * \return The exit status of the last command.
+ */
 int ast_command(struct ast_node *node, bool logger_enabled);
+
+/**
+ * \brief Handle word assignment
+ * \param node The AST to evaluate.
+ * \return The exit status of the last command.
+ */
 char *handle_word(struct ast_node *node);
+
 #endif /* AST_EVAL_H */
diff --git a/src/execute/ast_variable.c b/src/execute/ast_variable.c
index 2ccbc001..9863de36 100644
--- a/src/execute/ast_variable.c
+++ b/src/execute/ast_variable.c
@@ -1,9 +1,20 @@
+/**
+ * \file ast_variable.c
+ * \brief Handle variables.
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
+ * \version 1.0
+ * \date 12/01/2024
+ */
+
 #include "ast_eval.h"
 #include "hash_map/hash_map.h"
 #include "parser/parser.h"
 
 struct hash_map *variables = NULL;
 
+/**
+ * \brief Initialize the variables hash map.
+*/
 void init_variables()
 {
     if (variables == NULL)
@@ -12,12 +23,20 @@ void init_variables()
     }
 }
 
+/**
+ * \brief Free the variables hash map.
+*/
 void free_variables()
 {
     if (variables != NULL)
         hash_map_free(variables);
 }
 
+/**
+ * \brief Set a variable in the hash map.
+ * \param key The key of the variable.
+ * \param value The value of the variable.
+*/
 void set_variable(char *key, char *value)
 {
     init_variables();
@@ -25,6 +44,11 @@ void set_variable(char *key, char *value)
     hash_map_insert(variables, key, value, &updated);
 }
 
+/**
+ * \brief Get a variable from the hash map.
+ * \param key The key of the variable.
+ * \return The value of the variable or NULL if not found.
+*/
 char *get_variable(char *key)
 {
     key++;
@@ -51,6 +75,12 @@ char *get_variable(char *key)
     return "";
 }
 
+/**
+ * \brief Evaluate a node from the AST.
+ * \param node The AST to evaluate.
+ * \param logger_enabled Whether the logger is enabled or not.
+ * \return The exit status of the last command 0 if success, 1 if error.
+*/
 int ast_eval_assignment(struct ast_node *node, bool logger_enabled)
 {
     if (logger_enabled)
@@ -63,8 +93,11 @@ int ast_eval_assignment(struct ast_node *node, bool logger_enabled)
     return 0;
 }
 
-// Small function for handle variable (just check ast_node type and check the
-// hash table)
+/**
+ * \brief Small function for handle variable (just check ast_node type and check the hash table)
+ * \param node The AST to evaluate.
+ * \return The value of the variable or NULL if not found.
+*/
 char *handle_word(struct ast_node *node)
 {
     if (node->type == AST_WORD)
diff --git a/src/execute/builtin.c b/src/execute/builtin.c
index a763e944..feb6951a 100644
--- a/src/execute/builtin.c
+++ b/src/execute/builtin.c
@@ -1,7 +1,7 @@
 /**
  * \file builtin.c
  * \brief Builtin functions.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
@@ -26,6 +26,11 @@ int false_fun(struct ast_node *node)
     return 1;
 }
 
+/**
+ * \brief Print the current working directory.
+ * \param node The AST to evaluate.
+ * \return The exit status of the last command 0 if success, 1 if error.
+*/
 void print_echo(struct ast_node *node, int enable_escapes, int j)
 {
     for (int i = j; i < node->children_count; i++)
@@ -66,7 +71,11 @@ void print_echo(struct ast_node *node, int enable_escapes, int j)
     }
 }
 
-// TO REDUCE
+/**
+ * \brief Echo builtin function and returns the exit status.
+ * \param node The AST node.
+ * \return The exit status of the last command 0 if success, 1 if error.
+*/
 int echo_fun(struct ast_node *node)
 {
     int no_newline = 0;
diff --git a/src/execute/builtin.h b/src/execute/builtin.h
index fb185254..7243051d 100644
--- a/src/execute/builtin.h
+++ b/src/execute/builtin.h
@@ -1,7 +1,7 @@
 /**
  * \file builtin.h
- * \brief Builtin functions.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \brief Header of the builtin functions.
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
diff --git a/src/execute/hash_map/hash.c b/src/execute/hash_map/hash.c
index d1bf964e..d6152b3b 100644
--- a/src/execute/hash_map/hash.c
+++ b/src/execute/hash_map/hash.c
@@ -1,3 +1,11 @@
+/**
+ * \file hash.c
+ * \brief Implement the hash function.
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
+ * \version 1.0
+ * \date 12/01/2024
+ */
+
 #include <stddef.h>
 
 #include "hash_map.h"
diff --git a/src/execute/hash_map/hash_map.c b/src/execute/hash_map/hash_map.c
index c50e2b97..d4624816 100644
--- a/src/execute/hash_map/hash_map.c
+++ b/src/execute/hash_map/hash_map.c
@@ -1,3 +1,11 @@
+/**
+ * \file hash_map.c
+ * \brief Implement the hash map.
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
+ * \version 1.0
+ * \date 12/01/2024
+ */
+
 #include "hash_map.h"
 
 #include <stdbool.h>
diff --git a/src/execute/hash_map/hash_map.h b/src/execute/hash_map/hash_map.h
index f11dd4d8..c9502449 100644
--- a/src/execute/hash_map/hash_map.h
+++ b/src/execute/hash_map/hash_map.h
@@ -1,9 +1,21 @@
+/**
+ * \file hash_map.h
+ * \brief Header of the hash map.
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
+ * \version 1.0
+ * \date 12/01/2024
+ */
+
 #ifndef HASH_MAP_H
 #define HASH_MAP_H
 
 #include <stdbool.h>
 #include <stddef.h>
 
+/**
+ * \struct pair_list
+ * \brief Structure representing a pair of key/value.
+ */
 struct pair_list
 {
     const char *key;
@@ -11,19 +23,68 @@ struct pair_list
     struct pair_list *next;
 };
 
+/**
+ * \struct hash_map
+ * \brief Structure representing a hash map.
+ */
 struct hash_map
 {
     struct pair_list **data;
     size_t size;
 };
 
+/**
+ * \brief Hash a string.
+ * \param str The string to hash.
+ * \return The hash.
+*/
 size_t hash(const char *str);
+
+/**
+ * \brief Initialize a hash map.
+ * \param size The size of the hash map.
+ * \return The new hash map.
+ */
 struct hash_map *hash_map_init(size_t size);
+
+/**
+ * \brief Insert a new pair in the hash map.
+ * \param hash_map The hash map.
+ * \param key The key of the pair.
+ * \param value The value of the pair.
+ * \param updated A pointer to a boolean that will be set to true if the value
+ * was updated.
+ * \return True if the pair was inserted, false otherwise.
+ */
 bool hash_map_insert(struct hash_map *hash_map, const char *key, char *value,
                      bool *updated);
+
+/**
+ * \brief Free a hash map.
+ * \param hash_map The hash map to free.
+ */
 void hash_map_free(struct hash_map *hash_map);
+
+/**
+ * \brief Dump a hash map.
+ * \param hash_map The hash map to dump.
+ */
 void hash_map_dump(struct hash_map *hash_map);
+
+/**
+ * \brief Get a value from a hash map.
+ * \param hash_map The hash map.
+ * \param key The key of the pair.
+ * \return The value of the pair.
+ */
 const char *hash_map_get(const struct hash_map *hash_map, const char *key);
+
+/**
+ * \brief Remove a pair from a hash map.
+ * \param hash_map The hash map.
+ * \param key The key of the pair.
+ * \return True if the pair was removed, false otherwise.
+ */
 bool hash_map_remove(struct hash_map *hash_map, const char *key);
 
 #endif /* ! HASH_MAP_H */
\ No newline at end of file
diff --git a/src/execute/loop.c b/src/execute/loop.c
index 191eb9d2..0636be21 100644
--- a/src/execute/loop.c
+++ b/src/execute/loop.c
@@ -1,3 +1,11 @@
+/**
+ * \file loop.c
+ * \brief Loop functions.
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
+ * \version 1.0
+ * \date 12/01/2024
+ */
+
 #include "ast/ast.h"
 #include "ast_eval.h"
 
@@ -39,4 +47,4 @@ int for_loop(struct ast_node *node, bool logger_enabled)
         return -1;
     }
     return 0;
-}
\ No newline at end of file
+}
diff --git a/src/execute/pipeline.c b/src/execute/pipeline.c
index 170ce841..59dd4f40 100644
--- a/src/execute/pipeline.c
+++ b/src/execute/pipeline.c
@@ -1,3 +1,11 @@
+/**
+ * \file pipeline.c
+ * \brief Pipeline functions.
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
+ * \version 1.0
+ * \date 12/01/2024
+ */
+
 #include <stdlib.h>
 #include <string.h>
 #include <sys/wait.h>
diff --git a/src/execute/redirections.c b/src/execute/redirections.c
index 98941122..66262617 100644
--- a/src/execute/redirections.c
+++ b/src/execute/redirections.c
@@ -1,3 +1,11 @@
+/**
+ * \file redirections.c
+ * \brief Redirections functions.
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
+ * \version 1.0
+ * \date 12/01/2024
+ */
+
 #include <fcntl.h>
 #include <stdlib.h>
 #include <string.h>
@@ -7,6 +15,12 @@
 #include "ast/ast.h"
 #include "ast_eval.h"
 
+/**
+ * \brief Redirections manager.
+ * \param ast The AST node.
+ * \param logger_enabled If true, the logger is enabled.
+ * \return The exit status 0 if success, 1 if error.
+*/
 int redir_output(struct ast_node *node, bool logger_enabled)
 {
     if (logger_enabled)
@@ -40,6 +54,12 @@ int redir_output(struct ast_node *node, bool logger_enabled)
     return stat;
 }
 
+/**
+ * \brief Redirections manager.
+ * \param ast The AST node.
+ * \param logger_enabled If true, the logger is enabled.
+ * \return The exit status 0 if success, 1 if error.
+*/
 int redir_manager(struct ast_node *ast, bool logger_enabled)
 {
     if (logger_enabled)
@@ -51,4 +71,4 @@ int redir_manager(struct ast_node *ast, bool logger_enabled)
         return 0;
     }
     return 0;
-}
\ No newline at end of file
+}
diff --git a/src/execute/tests/exec_tests.c b/src/execute/tests/exec_tests.c
index 02756a6d..0b68da70 100644
--- a/src/execute/tests/exec_tests.c
+++ b/src/execute/tests/exec_tests.c
@@ -1,7 +1,7 @@
 /**
  * \file exec_tests.c
  * \brief Tests the exec function.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
diff --git a/src/io_backend/io_backend.c b/src/io_backend/io_backend.c
index 54b73b33..dcf2f928 100644
--- a/src/io_backend/io_backend.c
+++ b/src/io_backend/io_backend.c
@@ -10,6 +10,7 @@
 
 /**
  * \brief Read from stdin
+ * \return The input
  */
 char *io_backend_stdin(void)
 {
@@ -53,6 +54,8 @@ char *io_backend_stdin(void)
 
 /**
  * \brief Read from a file
+ * \param argv The arguments
+ * \return The input
  */
 char *io_backend_file(char **argv)
 {
diff --git a/src/io_backend/tests/io_backend_tests.c b/src/io_backend/tests/io_backend_tests.c
index 76e9e126..eee15f18 100644
--- a/src/io_backend/tests/io_backend_tests.c
+++ b/src/io_backend/tests/io_backend_tests.c
@@ -1,7 +1,7 @@
 /**
  * \file io_backend_tests.c
  * \brief Tests the io_backend function.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
diff --git a/src/lexer/lexer.c b/src/lexer/lexer.c
index 1d502b16..7bec4b33 100644
--- a/src/lexer/lexer.c
+++ b/src/lexer/lexer.c
@@ -1,7 +1,7 @@
 /**
  * \file lexer.c
  * \brief Lex the input.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
diff --git a/src/lexer/lexer.h b/src/lexer/lexer.h
index 05dfc386..f3d8cdb7 100644
--- a/src/lexer/lexer.h
+++ b/src/lexer/lexer.h
@@ -78,7 +78,10 @@ struct token lexer_pop(struct lexer *lexer);
 
 /**
  * \brief Handle the backslash character.
- *
+ * \param lexer The lexer.
+ * \param is_diactivated A pointer to a boolean that will be set to true if the word is diactivated.
+ * \param word The word.
+ * \param word_index The index of the word.
  * \return false if it's the end of the string, true otherwise.
  */
 void handle_backslash(struct lexer *lexer, bool *is_diactivated, char *word,
@@ -86,7 +89,10 @@ void handle_backslash(struct lexer *lexer, bool *is_diactivated, char *word,
 
 /**
  * \brief Handle the simple quote character.
- *
+ * \param lexer The lexer.
+ * \param is_diactivated A pointer to a boolean that will be set to true if the word is diactivated.
+ * \param word The word.
+ * \param word_index The index of the word.
  * \return false if a closing quote was not found, true otherwise.
  */
 char *handle_simple_quote(struct lexer *lexer, bool *is_diactivated, char *word,
@@ -94,11 +100,7 @@ char *handle_simple_quote(struct lexer *lexer, bool *is_diactivated, char *word,
 
 /**
  * \brief Check if the word is a variable assignement.
- *
- * \param lexer The lexer.
  * \param word The word to check.
- * \param word_index The index of the word.
- *
  * \return if the word is a variable assignement.
  */
 bool check_variable_assignement(char *word);
@@ -108,7 +110,7 @@ bool check_variable_assignement(char *word);
  * \param lexer The lexer.
  * \param word The word to check.
  * \param word_index The index of the word.
- *
+ * \param is_in_braces A pointer to a boolean that will be set to true if the word is in braces.
  * \return if the word is a variable name.
  */
 bool check_variable_name(struct lexer *lexer, char **word, unsigned *word_index,
@@ -117,6 +119,9 @@ bool check_variable_name(struct lexer *lexer, char **word, unsigned *word_index,
 /**
  * \brief Handle the dollar character.
  * \param lexer The lexer.
+ * \param word The word.
+ * \param word_index The index of the word.
+ * \param is_in_braces A pointer to a boolean that will be set to true if the word is in braces.
  * \return The next word.
  */
 bool handle_dollar(struct lexer *lexer, char **word, unsigned *word_index,
@@ -125,6 +130,9 @@ bool handle_dollar(struct lexer *lexer, char **word, unsigned *word_index,
 /**
  * \brief Handle the double quote character.
  * \param lexer The lexer.
+ * \param is_diactivated A pointer to a boolean that will be set to true if the word is diactivated.
+ * \param word The word.
+ * \param word_index The index of the word.
  * \return The next word.
  */
 char *handle_double_quote(struct lexer *lexer, bool *is_diactivated, char *word,
@@ -132,7 +140,9 @@ char *handle_double_quote(struct lexer *lexer, bool *is_diactivated, char *word,
 
 /**
  * \brief Handle the comment character.
- *
+ * \param lexer The lexer.
+ * \param word The word.
+ * \param word_index The index of the word.
  * \return The next word.
  */
 char *handle_comment(struct lexer *lexer, char *word, unsigned *word_index);
@@ -140,6 +150,7 @@ char *handle_comment(struct lexer *lexer, char *word, unsigned *word_index);
 /**
  * \brief Handle the redirection character.
  * \param lexer The lexer.
+ * \param word_index The index of the word.
  * \return The next redirection word.
  */
 char *handle_redir(struct lexer *lexer, unsigned *word_index);
@@ -147,8 +158,8 @@ char *handle_redir(struct lexer *lexer, unsigned *word_index);
 /**
  * \brief Returns the next word in the input string.
  * \param lexer The lexer.
- * \param is_diactivated A pointer to a boolean that will be set to true if the
- * word is diactivated. \return The next word.
+ * \param is_diactivated A pointer to a boolean that will be set to true if the word is diactivated.
+ * \return The next word.
  */
 char *get_word(struct lexer *lexer, bool *is_diactivated);
 
diff --git a/src/lexer/tests/lexer_tests.c b/src/lexer/tests/lexer_tests.c
index a91bf37d..bead5df4 100644
--- a/src/lexer/tests/lexer_tests.c
+++ b/src/lexer/tests/lexer_tests.c
@@ -1,7 +1,7 @@
 /**
  * \file lexer_tests.c
  * \brief Tests the lexer functions.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
diff --git a/src/options/options.c b/src/options/options.c
index 04d72d5e..f46e8473 100644
--- a/src/options/options.c
+++ b/src/options/options.c
@@ -1,7 +1,7 @@
 /**
  * \file options.c
  * \brief Options functions.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
@@ -15,6 +15,13 @@
 #include <string.h>
 #include <unistd.h>
 
+#include "ast/ast.h"
+
+/**
+ * \brief Check if the given string is a number.
+ * \param str The string to check.
+ * \return 1 if the string is a number, 0 otherwise.
+*/
 int is_number(char *str)
 {
     int i = 0;
@@ -105,6 +112,12 @@ int count_digits(int number)
     return count;
 }
 
+/**
+ * \brief Print the AST in a file.
+ * \param ast The AST to print.
+ * \param fd The file descriptor.
+ * \param node_count The number of nodes.
+*/
 void pp_node(struct ast_node *ast, int fd, int *node_count)
 {
     char *buff = malloc(sizeof(char) * 100000);
@@ -135,6 +148,13 @@ void pp_node(struct ast_node *ast, int fd, int *node_count)
     free(buff);
 }
 
+/**
+ * \brief Print the AST links in a file.
+ * \param ast The AST to print.
+ * \param fd The file descriptor.
+ * \param node_count The number of nodes.
+ * \param parent_id The parent id.
+*/
 void pp_link(struct ast_node *ast, int fd, int *node_count, int parent_id)
 {
     char *buff = malloc(sizeof(char) * 100000);
diff --git a/src/options/options.h b/src/options/options.h
index 20778a36..0c00ee33 100644
--- a/src/options/options.h
+++ b/src/options/options.h
@@ -1,7 +1,7 @@
 /**
  * \file options.h
  * \brief Header for options functions.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
@@ -50,6 +50,9 @@ void logger(char *str, enum logger_step step, bool logger_enabled);
 
 /**
  * \brief Pretty printf of ast.
+ * \param ast The ast to print.
+ * \param pretty_print_enabled True if the pretty print is enabled, false otherwise.
+ * \param depths The depths of the ast.
  */
 void pretty_print(struct ast_node *ast, bool pretty_print_enabled, int *depths);
 
diff --git a/src/options/tests/options_tests.c b/src/options/tests/options_tests.c
index 284fcd12..64ba3470 100644
--- a/src/options/tests/options_tests.c
+++ b/src/options/tests/options_tests.c
@@ -1,7 +1,7 @@
 /**
  * \file options_tests.c
  * \brief Tests the options functions.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
diff --git a/src/parser/parser.c b/src/parser/parser.c
index 0c331a69..307baa42 100644
--- a/src/parser/parser.c
+++ b/src/parser/parser.c
@@ -1,7 +1,7 @@
 /**
  * \file parser.c
  * \brief Parse the input and build the AST.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
@@ -62,9 +62,6 @@ struct ast_node *parse(struct lexer *lexer)
     return input(lexer);
 }
 
-/**
- * \brief Parse loop line by line and execute it
- */
 int parser_loop(struct lexer *lexer, bool logger_enabled,
                 bool pretty_print_enabled)
 {
diff --git a/src/parser/parser.h b/src/parser/parser.h
index 7322ee86..9d33b9a2 100644
--- a/src/parser/parser.h
+++ b/src/parser/parser.h
@@ -21,7 +21,7 @@
  * \param lexer The lexer to parse.
  * \param logger_enabled The option logger.
  * \param pretty_print_enabled The option pretty_print.
- * \return code of execution.
+ * \return code of execution 0 if success, 1 if error.
  */
 int parser_loop(struct lexer *lexer, bool logger_enabled,
                 bool pretty_print_enabled);
@@ -156,6 +156,11 @@ enum token_type parser_peek(struct lexer *lexer);
  */
 enum token_type parser_pop(struct lexer *lexer);
 
+/**
+ * \brief Return the next token type and consume it if it matches the given
+ * \param lexer The lexer to parse.
+ * \return The next token type.
+ */
 struct ast_node *parse_variable(struct lexer *lexer);
 
-#endif /* ! PARSER_H */
\ No newline at end of file
+#endif /* ! PARSER_H */
diff --git a/src/parser/parser_condition.c b/src/parser/parser_condition.c
index fb0f86d1..211bc9ca 100644
--- a/src/parser/parser_condition.c
+++ b/src/parser/parser_condition.c
@@ -1,7 +1,7 @@
 /**
  * \file parser_condition.c
  * \brief Parse the condition rule.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
@@ -257,4 +257,4 @@ struct ast_node *rule_for(struct lexer *lexer)
 ERROR:
     ast_free(current);
     return NULL;
-}
\ No newline at end of file
+}
diff --git a/src/parser/parser_element.c b/src/parser/parser_element.c
index fa6aaf7a..19d8b743 100644
--- a/src/parser/parser_element.c
+++ b/src/parser/parser_element.c
@@ -1,7 +1,7 @@
 /**
  * \file parser_element.c
  * \brief Parse the element rule.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */
@@ -206,4 +206,4 @@ struct ast_node *element(struct lexer *lexer)
     }
     ast_free(current);
     return NULL;
-}
\ No newline at end of file
+}
diff --git a/src/parser/parser_functionnal.c b/src/parser/parser_functionnal.c
index bd5834c1..5eeddb2a 100644
--- a/src/parser/parser_functionnal.c
+++ b/src/parser/parser_functionnal.c
@@ -1,3 +1,11 @@
+/**
+ * \file parser_functionnal.c
+ * \brief Parse the functionnal
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
+ * \version 1.0
+ * \date 12/01/2024
+ */
+
 #include "parser.h"
 
 struct ast_node *prefix(struct lexer *lexer)
@@ -41,4 +49,4 @@ struct ast_node *redirection(struct lexer *lexer)
     }
     ast_free(current);
     return NULL;
-}
\ No newline at end of file
+}
diff --git a/src/parser/parser_variable.c b/src/parser/parser_variable.c
index 60a8c818..0378d9dd 100644
--- a/src/parser/parser_variable.c
+++ b/src/parser/parser_variable.c
@@ -1,3 +1,11 @@
+/**
+ * \file parser_variable.c
+ * \brief Parse the variable
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
+ * \version 1.0
+ * \date 12/01/2024
+ */
+
 #include "parser.h"
 
 struct ast_node *parse_variable(struct lexer *lexer)
diff --git a/src/parser/tests/parser_tests.c b/src/parser/tests/parser_tests.c
index 169d8764..c81d75c9 100644
--- a/src/parser/tests/parser_tests.c
+++ b/src/parser/tests/parser_tests.c
@@ -1,7 +1,7 @@
 /**
  * \file parser_tests.c
  * \brief Tests the parser functions.
- * \author Erwann Lesech, Valentin Gibert, Ugo Majer, Alexandre Privat
+ * \author Erwann Lesech, Valentin Gibbe, Ugo Majer, Alexandre Privat
  * \version 1.0
  * \date 12/01/2024
  */