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diff --git a/src/bltGrHairsOp.h b/src/bltGrHairsOp.h
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+/*
+ * Smithsonian Astrophysical Observatory, Cambridge, MA, USA
+ * This code has been modified under the terms listed below and is made
+ * available under the same terms.
+ */
+
+/*
+ *	Copyright 1993-2004 George A Howlett.
+ *
+ *	Permission is hereby granted, free of charge, to any person
+ *	obtaining a copy of this software and associated documentation
+ *	files (the "Software"), to deal in the Software without
+ *	restriction, including without limitation the rights to use,
+ *	copy, modify, merge, publish, distribute, sublicense, and/or
+ *	sell copies of the Software, and to permit persons to whom the
+ *	Software is furnished to do so, subject to the following
+ *	conditions:
+ *
+ *	The above copyright notice and this permission notice shall be
+ *	included in all copies or substantial portions of the
+ *	Software.
+ *
+ *	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+ *	KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+ *	WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ *	PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
+ *	OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *	OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ *	OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ *	SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __BltGrHairsOp_h__
+#define __BltGrHairsOp_h__
+
+extern int Blt_CrosshairsOp(Graph* graphPtr, Tcl_Interp* interp, int objc, 
+			    Tcl_Obj* const objv[]);
+extern int Blt_CreateCrosshairs(Graph* graphPtr);
+extern void Blt_DestroyCrosshairs(Graph* graphPtr);
+extern void Blt_DisableCrosshairs(Graph* graphPtr);
+extern void Blt_EnableCrosshairs(Graph* graphPtr);
+
+#endif