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diff --git a/generic/tkbltOp.h b/generic/tkbltOp.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 __BltOp_h__
+#define __BltOp_h__
+
+#include <tk.h>
+
+#define BLT_OP_BINARY_SEARCH	0
+#define BLT_OP_LINEAR_SEARCH	1
+
+namespace Blt {
+
+  typedef struct {
+    const char *name;		/* Name of operation */
+    int minChars;		/* Minimum # characters to disambiguate */
+    void *proc;
+    int minArgs;		/* Minimum # args required */
+    int maxArgs;		/* Maximum # args required */
+    const char *usage;		/* Usage message */
+  } Blt_OpSpec;
+
+  typedef enum {
+    BLT_OP_ARG0,		/* Op is the first argument. */
+    BLT_OP_ARG1,		/* Op is the second argument. */
+    BLT_OP_ARG2,		/* Op is the third argument. */
+    BLT_OP_ARG3,		/* Op is the fourth argument. */
+    BLT_OP_ARG4			/* Op is the fifth argument. */
+
+  } Blt_OpIndex;
+
+  void *GetOpFromObj(Tcl_Interp* interp, int nSpecs, 
+		     Blt_OpSpec *specs, int operPos, int objc, 
+		     Tcl_Obj* const objv[], int flags);
+};
+
+#endif
+