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diff --git a/sys/imio/impmsne1.x b/sys/imio/impmsne1.x
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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<imio.h>
+
+# IM_PMSNE1 -- Pixel mask section not empty.
+
+bool procedure im_pmsne1 (im, x1, x2)
+
+pointer	im			#I image descriptor
+int	x1, x2			#I section to be tested
+
+bool	pm_sectnotempty()
+
+begin
+	return (pm_sectnotempty (IM_PL(im), x1, x2, 1))
+end