Conditional_Commands

   The .IF, .IF NOT, .ELSE, and .ENDIF commands (also known as
   the conditional commands) cause portions of a DSR file to be
   processed or not processed, according to conditions that you
   specify. The commands refer to the /VARIANT qualifier that you
   specify on the DSR command line. (See also /DEBUG=CONDITIONALS
   and .VARIABLE.)

   Formats

     .IF  name

     .ELSE  name

     .IFNOT  name (or .IN name)

     .ENDIF  name (or .EI name)
 

Additional information available:

Parameter