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        LAS\MODIFY Item [Values...]

    This is a general purpose command to edit and change the current  obser-
    vation header. Some actions are merely presentation "details", others do
    affect the information in the observation. Among these, RECENTER, WIDTH,
    IMAGE  and SWITCH_MODE are typically used only when the software did not
    agree with the hardware when the spectra was taken (i.e. when the infor-
    mation  in  the  observation  header is wrong). They should be used with

    MODIFY actions are limited. You should use the SIC\ command LET to modi-
    fy  header  variables  which are not available within the MODIFY command
    (Caution: this is the rope to hang you).


Gildas manager 2018-02-24