READ Optimisation

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READ Optimisation

            Reading can be lengthy, especially for ALMA data.   IMAGER  attempts
        to  minimize  read  operations by checking if anything has changed since
        the last command.  This capability is enable if the  SIC  variable  MAP-
        PING_OPTIMIZE is non zero, disabled otherwise.

          Currently,  the READ command always display a message about what read-
        ing may have been skipped, and whether this  possible  optimization  has
        been overridden by user choice.