DelVar   Variable

Delete a variable or variables. Can use wildcards for deleting
Gui4Cli variables

ex : DelVar MyVar           - Delete MyVar
or:  DelVar MyVar#?         - Delete all variables starting with
                              MyVar.

You can use this command for deleting both NORMAL or ENVIRONMENT
variables (env: variables have a . (full stop) as the first character)
If you want to use wildcards in deleting env: variables, use
the DELETE command.

Nothing drastic happens if the variable does not exist.

Also, nothing happens if at end of the program you do not delete all the
ENV: variables that you have declared. They just remain in the ENV: directory
of your ram: wasting space.

The NORMAL variables will be automatically be deleted when Gui4Cli
quits.