MODIFY POSITION

        LAS\MODIFY POSITION Lambda Beta

    Change the projection center to (Lambda,Beta). Units are degrees, except
    Lambda in hour angle if coordinate  system  is  Equatorial.  Sexagesimal
    strings or numeric real values can be used.

    The offsets are also modified, as to be consistent with the center. This
    is useful when different parts of one source are mapped relative to sev-
    eral reference positions.

    This command is a shortcut for:
      MODIFY PROJECTION  =  Lambda Beta  =
    i.e.  modify  the projection center but preserve the projection kind and
    angle.