DEFINE IMAGE

        DEFINE IMAGE Var1 File1 Key1 [Var2 File2 Key2 [...]] [/GLOBAL]

    defines variables associated to both the content and the header  of  the
    GILDAS  images  located  in  the specified files. This command acts as a
    combination of DEFINE HEADER and  DEFINE  TABLE.  It  accepts  the  same
    keywords  (KeyN)  as  DEFINE  TABLE.  If the keyword is READ, the header
    variables are mapped ReadOnly, otherwise they are mapped ReadWrite.

    See HELP DEFINE HEADER  for  a  description  of  the  individual  header
    variables.