diff --git a/src/editable-form/editable-form.js b/src/editable-form/editable-form.js
index a690ba5..7ab89d9 100644
--- a/src/editable-form/editable-form.js
+++ b/src/editable-form/editable-form.js
@@ -288,6 +288,11 @@ Editableform is linked with one of input types, e.g. 'text', 'select' etc.
             this.options.pk = $.fn.editableutils.tryParseJson(this.options.pk, true); 
             
             var pk = (typeof this.options.pk === 'function') ? this.options.pk.call(this.options.scope) : this.options.pk,
+            /*
+              send on server in following cases:
+              1. url is function
+              2. url is string AND (pk defined OR send option = always) 
+            */
             send = !!(typeof this.options.url === 'function' || (this.options.url && ((this.options.send === 'always') || (this.options.send === 'auto' && pk !== null && pk !== undefined)))),
             params;