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      Get a list from a file specified by an environmental var.


Calling Sequence

      getsysnams, evar, n, lst1, [lst2, lst3]


      evar = environ var (symbol in VMS) with file name. in

Keyword Parameters


        ERROR=err 0=ok, 1=no such environmental variable,
      2=file not found.


      n = number of elements in each list. out
      lst1, lst2, lst3 = output lists. out

Common Blocks


      Notes: the lines in the file are returned divided into as
        many output lists as are requested, with the first line
        in the first list, second in second, .... File lines
        starting with * are considered comments and are ignored.
        This routine is useful for system dependent lists, such
        as postscript printers or tape drives.
        As an example for printers let the file contain:
        *---- Example printers file --------
        Postscript printer # 1 in room A.
        Postscript printer # 2 in room B.
        To use:
        (1) Set up a systen environmental variable, like
            IDL_PSPRINTERS, with the name of the above file.
        (2) getsysnams,'idl_psprinters', n, cmds, nams
            will give: n = 2, cmds = string array of print
            commands, nams = string array of descriptive names
            (good for menus).

Modification History

      R. Sterner, 22 May, 1990
      R. Sterner, 26 Feb, 1991 --- Renamed from get_sysnames.pro
  Copyright (C) 1990, Johns Hopkins University/Applied Physics Laboratory
  This software may be used, copied, or redistributed as long as it is not
  sold and this copyright notice is reproduced on each copy made. This
  routine is provided as is without any express or implied warranties
  whatsoever. Other limitations apply as described in the file disclaimer.txt.

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