UPDATE

##
UPDATE

            LAS\UPDATE

        Update the LAST version of the observation in the R buffer in the output
        file.  You  can  update only the last version. The update OVERWRITES the
        observation. This command MUST BE USED WITH CAUTION; in case of  complex
        manipulations  of  observations, you may get confused and erase precious
        data.

        If more space is needed (e.g., the new version has more header  informa-
        tion),  an  error  is  returned.  You MUST then WRITE the observation to
        avoid loss of information.

        The only typical case where it may be used is in the following sequence:
            GET Number
            MINIMIZE or MODIFY
            UPDATE