From OpenSCADAWiki
The mechanism "Script for the control the opening of pages" based on the basic attribute of the widget "evProc", which can be used for opening the pages. Scenario of this attribute is stored as a list of commands with the syntax: "{event}:{evSrc}:{com}:{prm}". Where:
- event — expected event;
- evSrc — path of the nested widget-source of the event; can be "*" for processing here events of any source,
but where you can get linking to unexpected sources; - com — session command;
- prm — parameter of the command.
