DESCRIPTION Tk::ExecuteCommand runs a command yet still allows Tk events to flow. All command output and errors are dis- played in a window. This ExecuteCommand mega widget is composed of an LabEntry widget for command entry, a "Do It" Button that initiates command execution, and a ROText widget that collects com- mand execution output. While the command is executing, the "Do It" Button changes to a "Cancel" Button that can prematurely kill the execut- ing command. The kill_command method does the same thing programmatically. Steve Lidie 2002/09/14 sol0@lehigh.edu