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     With CHECKDIV or CHECKDIV "ANSI" specified, the program will continue
     with an undefined result if it tries to divide by zero. With
     NOCHECKDIV set, the behavior is undefined. Setting NOCHECKDIV results
     in optimal code for divides.
 
     Specifying CHECKDIV "OSVS", CHECKDIV "VSC2", or CHECKDIV "COBOL370"
     has the same effect; trying to divide by zero will produce run-time
     error 48 (Attempt to divide by zero (fatal)). This error can be
     disabled using the -O RTS switch.
 
     This directive has no effect on arithmetic statements that use the
     ON SIZE ERROR phrase.
 
     See also ◄O RTS switch►
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