Rendered by the New Chatterbox XML Ticker Discipulus 174111 2016-09-30 1475238694 1693248 Ok, it is there a way in Tk for a keybinding to toggle the value of a variable? Discipulus 174111 2016-09-30 1475238750 1693249 it seems that var evaluation is made at the time the callback is created. can i break this rule?