How do I change the keywords that are highlighted?
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 MrDebug looks for a file called MRDEBUG.WRD which has to be in either one of
 the directories pointed at by the following DOS environment variables:

        SOURCE
        Path for Source Code setting from Options menu.
        INCLUDE
        LIB

 If you have multiple MRDEBUG.WRD files, then MrDebug will use the one that
 it finds first in the following search order:

        Current Directory
        Path for Source Code setting from Options menu.
        SOURCE environment variable
        INCLUDE environment variable
        LIB environment variable

 We do not supply a MRDEBUG.WRD, instead we supply three files that you may
 use or edit. You will need to rename one of these files to MrDebug.WRD in
 order to get Colour Syntax Highlighting working:

        Commands.WRD - contains all CA-Clipper commands

        Control.WRD  - contains just control commands, such as IF, DO CASE,
                       DO WHILE, ENDDO, FUNCTION, PROCEDURE, STATIC, LOCAL
                       etc.

        Keywords.WRD - contains everything but the coffee maker.