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   TAKE FULL ADVANTAGE OF THE DEBUG SETTING
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   PRODUCT   :  R:BASE                  VERSION      :  3.1
   CATEGORY  :  PROGRAMMING             SUBCATEGORY  :  TOOLS
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   Take full advantage of the DEBUG setting by putting the following code
   at the top of every program:
 
     SET MESSAGES OFF
     SET ERROR MESSAGES OFF
     DEBUG SET MESSAGES ON
     DEBUG SET ERROR MESSAGES ON
 
   The last two SET commands execute if DEBUG is ON. The following code
   clears variables if DEBUG is OFF:
 
     SET VAR vdebug = (CVAL('DEBUG'))
     IF vdebug = 'OFF' THEN
       CLEAR VAR v1, v2, v3, ...
     ENDIF