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+#| -*-Scheme-*-
+
+$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/6001/edextra.scm,v 1.1 1992/09/01 20:11:00 cph Exp $
+
+Copyright (c) 1992 Massachusetts Institute of Technology
+
+This material was developed by the Scheme project at the Massachusetts
+Institute of Technology, Department of Electrical Engineering and
+Computer Science.  Permission to copy this software, to redistribute
+it, and to use it for any purpose is granted, subject to the following
+restrictions and understandings.
+
+1. Any copy made of this software must include this copyright notice
+in full.
+
+2. Users of this software agree to make their best efforts (a) to
+return to the MIT Scheme project any improvements or extensions that
+they make, so that these may be included in future releases; and (b)
+to inform MIT of noteworthy uses of this software.
+
+3. All materials developed as a consequence of the use of this
+software shall duly acknowledge such use, in accordance with the usual
+standards of acknowledging credit in academic research.
+
+4. MIT has made no warrantee or representation that the operation of
+this software will be error-free, and MIT is under no obligation to
+provide any services, by way of maintenance, update, or otherwise.
+
+5. In conjunction with products arising from the use of this material,
+there shall be no use of the name of the Massachusetts Institute of
+Technology nor of any adaptation thereof in any advertising,
+promotional, or sales literature without prior written consent from
+MIT in each case. |#
+
+;;;; 6.001: Edwin Extensions
+
+(declare (usual-integrations))
+
+(define-command print-graphics
+  "Print out the last displayed picture."
+  '()
+  (let ((call-with-last-picture-file
+        (environment-lookup (->environment '(student pictures))
+                            'call-with-last-picture-file)))
+    (lambda ()
+      (call-with-last-picture-file
+       (lambda (filename)
+        (if filename
+            (begin
+              (message "Spooling...")
+              (shell-command
+               false false false false
+               (string-append "/users/u6001/bin/print-pgm.sh "
+                              filename
+                              " "
+                              (print/assemble-switches "Scheme Picture" '())
+                              switches))
+              (append-message "done"))
+            (editor-error "No picture to print!")))))))
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