Save.php: added some doc.

extension/qfq/qfq/Save.php

@@ -72,6 +72,8 @@ class Save {
     }
 
     /**
+     * Create empty FormElements based on templateGroups, for those who not already exist.
+     *
      * @param array $formValues
      * @return array
      */
@@ -88,6 +90,8 @@ class Save {
     }
 
     /**
+     * Build an array of all values which should be saved. Values must exist as a 'form value' as well as a regular 'table column'.
+     *
      * @param $recordId
      * @return int   record id (in case of insert, it's different from $recordId)
      * @throws CodeException