Add note about the cmi.exit string

main/lp/scorm_api.php

@@ -701,6 +701,7 @@ function LMSSetValue(param, val) {
         save_suspend_data_in_local(); // save to local storage if available
         return_value='true';
     } else if ( param == "cmi.core.exit" || param == "cmi.exit" ) {
+        //cmi.exit for SCORM 1.3
         olms.lms_item_core_exit = val;
         olms.updatable_vars_list['cmi.core.exit']=true;
         return_value='true';