MODIFY

 

        LAS\MODIFY Item [Values...]

    This is a general  purpose  command  to  edit  and  change  the  current
    observation  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  information  in the observation header is wrong). They
    should be used with caution.

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

• MODIFY FREQUENCY
• MODIFY OFFSETS
• MODIFY BLANKING
• MODIFY RECENTER
• MODIFY BANDS
• MODIFY LINENAME
• MODIFY VELOCITY
• MODIFY WIDTH
• MODIFY IMAGE
• MODIFY BEAM_EFF
• MODIFY TELESCOPE
• MODIFY POSITION
• MODIFY SYSTEM
• MODIFY SWITCH_MODE