update - flush graphics
Changes made via Tk commands do not become visible until a call to
flushes any pending changes to the screen. The following options are supported:
If this option is given, all updates are disabled. This is useful to enable a program to stop mouse movement causing automatic updates while it is making changes to the window.
This reverses a previous
Changes that affect window sizes are visible immediately.
Rev: Tue Mar 31 02:42:39 GMT 2015