title: Keep getting error messages in ghostscript when using the documented ghostscript syntax
body: <p>I am new to ghostscript and I cannot figure out the syntax. Whenever I try the simplest of commands ex -h or -? I get an error and I have tried them in all sorts of combinations.</p>
  
  <pre><code>    GPL Ghostscript 9.05 (2012-02-08)
  Copyright (C) 2010 Artifex Software, Inc.  All rights reserved.
  This software comes with NO WARRANTY: see the file PUBLIC for details.
  
  GS&gt;-h
  Error: /undefined in -h
  Operand stack:
  
  Execution stack:
    %interp_exit   .runexec2   --nostringval--   --nostringval--   --nostringval-
  -   2   %stopped_push   --nostringval--   --nostringval--   %loop_continue   --n
  ostringval--   --nostringval--   false   1   %stopped_push   .runexec2   --nostr
  ingval--   --nostringval--   --nostringval--   2   %stopped_push   --nostringval
  --
  Dictionary stack:
     --dict:1166/1684(ro)(G)--   --dict:0/20(G)--   --dict:77/200(L)--
  Current allocation mode is local
  Last OS error: No such file or directory
  Current file position is 3
  
  
  GS&gt;gs-h
  Error: /undefined in gs-h
  Operand stack:
  
  Execution stack:
    %interp_exit   .runexec2   --nostringval--   --nostringval--   --nostringval-
  -   2   %stopped_push   --nostringval--   --nostringval--   %loop_continue   --n
  ostringval--   --nostringval--   false   1   %stopped_push   .runexec2   --nostr
  ingval--   --nostringval--   --nostringval--   2   %stopped_push   --nostringval
  --
  Dictionary stack:
     --dict:1166/1684(ro)(G)--   --dict:0/20(G)--   --dict:77/200(L)--
  Current allocation mode is local
  Current file position is 5
  </code></pre>