Dev: added comments on setVarFromArgs

application/helpers/SurveyRuntimeHelper.php

@@ -1351,6 +1351,15 @@ private function moveSubmitIfNeeded($redata)
     }
 
 
+    /**
+     * The run method fed $redata with using get_defined_var(). So it was very hard to move a piece of code from the run method to a new one.
+     * To make it easier, private variables has been added to this class:
+     * So when a piece of code changes a variable (a variable that originally was finally added to redata get_defined_var()), now, it also changes its private variable version.
+     * Then, before performing the get_defined_var, the private variables are used to recreate those variables. So we can move piece of codes to sub methods.
+     * setVarFromArgs($args) will set the original state of those private variables using the parameter $args passed to the run() method
+     *
+     * @params array $args 
+     */
     private function setVarFromArgs($args)
     {
         extract($args);