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-rw-r--r--sys/gio/gclear.x20
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diff --git a/sys/gio/gclear.x b/sys/gio/gclear.x
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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <gio.h>
+include <gset.h>
+
+# GCLEAR -- Clear the screen and initialize all internal state variables to
+# the original GOPEN state. Plots separated by calls to GCLEAR cannot affect
+# each other. See also GFRAME and GRESET if a full state reset is not
+# desired.
+
+procedure gclear (gp)
+
+pointer gp # graphics descriptor
+
+begin
+ call gactivate (gp, 0)
+ call gpl_flush()
+ call gki_clear (GP_FD(gp))
+ call greset (gp, GR_RESETALL)
+end