diff --git a/include/arc/std/parser.h b/include/arc/std/parser.h
index 49915ba..933ee83 100644
--- a/include/arc/std/parser.h
+++ b/include/arc/std/parser.h
@@ -11,12 +11,12 @@ extern "C" {
 #include <stdint.h>
 
 /**
- * @brief a parser type
+ * @brief a type used for splitting a string up into parts and storing them in user defined types
 */
 typedef struct ARC_Parser ARC_Parser;
 
 /**
- * @brief a langue tag type for the parser //TODO: explain this better
+ * @brief a type that stores a tag id, and a list of tokens and tags that are the rules for a tag in a language
 */
 typedef struct ARC_ParserTag {
   uint32_t tagId;
@@ -42,17 +42,25 @@ typedef struct ARC_ParserTagToken {
 /**
  * @brief a callback function to initialize the lexer the parser uses with rules
  *
- * @param lexer the lexer used by the parser that rules should be added to
+ * @param[in] lexer the lexer used by the parser that rules should be added to
 */
 typedef void (* ARC_Parser_InitLexerRulesFn)(ARC_Lexer *lexer);
 
 /**
- * @brief TODO: write this
+ * @brief a function callback the user provides to get a tag or token ID from a string
+ *
+ * @param[in] string the string to get an id from
+ *
+ * @return an id from the user, the user also can determine what id should be an error
 */
 typedef uint32_t (* ARC_Parser_GetStringIdFn)(ARC_String *string);
 
 /**
- * @brief TODO: write this
+ * @brief a function callback to create and store parsed data passed in
+ *
+ * @param[in/out] data       the place to store the datatype after it is created
+ * @param[in]     parsedData the parsed data to use in creating the data
+ * @param[in]     userData   the data that is passed in during parser create, can be anything this callback
 */
 typedef void (* ARC_ParserData_CreateFn)(void **data, ARC_ParserTagToken *parsedData, void *userData);