Refs #9733: add dev documentation.

Documentation-develop/PROTOCOL.md

@@ -518,6 +518,13 @@ On `"conflict"` the Client opens the alert as modal dialog (user can't change an
 form' button.
 On `"conflict_allow_force"` the Client opens the alert non-modal (default).
 
+### tabUniqId
+
+Every tab get's a uniq id (timestamp) on page load: window.name.
+This 'tabUniqId' is saved in dirty record on lock acquire. 
+On page reload, when the 'release' comes after 'acquire' (unwished async behaviour), the locking is skipped (if same user 
+session) - on reload there is no variable 'tabUniqId'. On real lock acquire, the tab ID is compared and will be denied 
+if not matching. The 'tabUniqId' might not work in IE - doesn't matter: it's a seldom special situation.
 
 ### Drag And Drop (sort)