Validate Zillion Key Keyword
Parameter and switch to validate the button name text as a Zillion mode response. Prior to the use of this all button names are recorded by the
Zillion input mode, after this keyword's use only those names validated are stored.
to remove valid keys.
Prior to version 0.28 the enter key name (e.g. <vzk +Enter>) had to be part of this list for the <ZillionEnterKey> mode. It was also a good idea to separate the <vzk> switches with spaces prior to 0.24, due to a failure in the keyword parser that has now been rectified.