In Java UI, it was possible to call the ‘Variable Picker’ for predefined system variables in the ‘Variables & Prompts’-Tab. Either by clicking on ‘Variables...’ in the menu or by clicking on the Pen-icon in the ‘Value’ field and clicking ‘Variables...’.
In AWI there is no such option anymore.
This missing function should be brought back. It was available in Java UI and should be available in AWI, too.