MASK Tricks
Keywords: imager

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MASK Tricks

              The MASK variable is ReadOnly. Yet, the user may want to modify it
        directly by himself.  The following commands
          DEFINE ALIAS WMASK MASK /GLOBAL
          LET WMASK /STATUS WRITE
        will  create  an alias to MASK which can be written by the user at will.
        This method is actually used in the Interactive MASK tool.