DEFINE TABLE

        [SIC\]DEFINE TABLE Var1 File1 Key1 [Var2 File2 Key2 [...]] [/GLOBAL]

    Define  variables  associated  to GILDAS images located in the files, if
    specified. The variable type and dimensions are derived according to the
    value of the keyword Key and the file content:
      - READ  or  WRITE: use the type and dimensions from the file, and con-
        nect the image in Readonly or ReadWrite access.  The  variable  name
        must not include any dimension field.
      - DOUBLE,  INTEGER  or REAL: create a new table of the specified type.
        The dimensions must then be specified in the dimension field of  the
        variable  name,  as  for a standard variable. The associated file is
        created, unless a star ('*') is used as file name.
      - EXTEND: take type and first dimensions from the file, but extend the
        last  dimension  to  the value specified in the dimension field. The
        full syntax in this case is thus
                DEFINE TABLE Var[Ldim] File EXTEND
        where Ldim is the new value for the last dimension.

    DEFINE TABLE does not create any  additional  variables  for  the  image
    header. See DEFINE IMAGE and DEFINE HEADER for this information.