diff --git a/include/easycsv.h b/include/easycsv.h
index 0999975..022ba7b 100644
--- a/include/easycsv.h
+++ b/include/easycsv.h
@@ -40,7 +40,7 @@ easycsv_init_errormsg(const char*,
 void
 easycsv_free(easycsv*);
 
-/*** Access ***/
+/*** Access, find ***/
 
 /** 
  * Find value and returns row and column 
@@ -66,6 +66,8 @@ int
 easycsv_findnumvalue(const easycsv*,
 		     const char*);
 
+/*** Access, read ***/
+
 /** 
  * Read string in a specific cell 
  * @param[in] constant pointer to easycsv structure 
@@ -90,6 +92,8 @@ easycsv_readcolumnvalue(const easycsv*,
 			const char*,
 		        unsigned int);
 
+/*** Access, print ***/
+
 /** 
  * Return number of rows 
  * @param[in] constant pointer to easycsv structure 
@@ -206,33 +210,59 @@ easycsv_insertcolumnvaluemode(easycsv*,
 			      const char*,
 			      EASYCSV_VALMODE);
 
-/* Modifications, push */
+/*** Modifications, push ***/
 
-/* Create new column on the RHS of an existing one */
+/**
+ * Create new column on the right-hand side of an existing one 
+ * @param[in] pointer to easycsv structure
+ * @param[in] column value
+ * @return easycsv error code
+ */
 int
 easycsv_pushcolumn(easycsv*,
 		   const char*);
 
-/* Insert string in a vacant cell under a named column */
+/** 
+ * Insert string in a vacant cell under a named column 
+ * @param[in] pointer to easycsv structure
+ * @param[in] column value
+ * @param[in] cell value
+ * @return easycsv error code
+ */
 int
 easycsv_pushcolumnvalue(easycsv*,
 			const char*,
 			const char*);
 
-/* Modifications, delete */
+/*** Modifications, delete ***/
 
-/* Delete CSV value */
+/**
+ * Delete cell value 
+ * @param[in] pointer to easycsv structure
+ * @param[in] row number
+ * @param[in] column number
+ * @return easycsv error code
+ */
 int
 easycsv_deletevalue(easycsv*,
-		    const unsigned int,
-		    const unsigned int);
+		    unsigned int,
+		    unsigned int);
 
-/* Delete numbered column */
+/**
+ * Delete numbered column 
+ * @param[in] pointer to easycsv structure
+ * @param[in] column number
+ * @return easycsv error code
+ */
 int
 easycsv_deletecolumnint(easycsv*,
-			const unsigned int);
+			unsigned int);
 
-/* Delete named column */
+/** Delete named column 
+ * @param[in] pointer to easycsv structure
+ * @param[in] column value
+ * @return easycsv error code
+ */
 int
 easycsv_deletecolumnstr(easycsv*,
 			const char*);
@@ -241,15 +271,25 @@ easycsv_deletecolumnstr(easycsv*,
 
 /* Delete named row */
 
+/*** Modifications, append ***/
 
-
-/* Modifications, append */
+/**
+ * Append two CSV files
+ * @param[in] destination CSV file
+ * @param[in] source CSV file
+ * @return easycsv error code
+ */
 int
 easycsv_appendcsv(easycsv*,
 		  easycsv*);
 
 /*** Modifications, miscellenaeous ***/
 
+/**
+ * Compress a CSV file
+ * @param[in] pointer to easycsv structure
+ * @return easycsv error code
+ */
 int
 easycsv_compress(easycsv*);