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diff --git a/bltGrMarkerBitmap.h b/bltGrMarkerBitmap.h
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+++ b/bltGrMarkerBitmap.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.
+ */
+
+/*
+ * bltGrMarkerBitmap.c --
+ *
+ * This module implements markers for the BLT graph widget.
+ *
+ *	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 _BLT_GR_MARKER_BITMAP_H
+#define _BLT_GR_MARKER_BITMAP_H
+
+#include "bltGrMarker.h"
+
+typedef struct {
+  GraphObj obj;			/* Must be first field in marker. */
+
+  MarkerClass *classPtr;
+
+  Tcl_HashEntry *hashPtr;
+
+  Blt_ChainLink link;
+
+  const char* elemName;		/* Element associated with marker. Let's
+				 * you link a marker to an element. The
+				 * marker is drawn only if the element
+				 * is also visible. */
+  Axis2d axes;
+
+  Point2d *worldPts;			/* Coordinate array to position
+					 * marker. */
+  int nWorldPts;			/* # of points in above array. */
+
+  int drawUnder;			/* If non-zero, draw the marker
+					 * underneath any elements. This can be
+					 * a performance penalty because the
+					 * graph must be redraw entirely each
+					 * time the marker is redrawn. */
+
+  int clipped;			/* Indicates if the marker is totally
+				 * clipped by the plotting area. */
+
+  int hide;
+  unsigned int flags;		
+
+
+  int xOffset, yOffset;		/* Pixel offset from graph position */
+
+  int state;
+
+  /* Fields specific to bitmap markers. */
+
+  Pixmap srcBitmap;			/* Original bitmap. May be further
+					 * scaled or rotated. */
+  double reqAngle;			/* Requested rotation of the bitmap */
+  float angle;			/* Normalized rotation (0..360
+				 * degrees) */
+  Tk_Anchor anchor;			/* If only one X-Y coordinate is given,
+					 * indicates how to translate the given
+					 * marker position.  Otherwise, if there
+					 * are two X-Y coordinates, then this
+					 * value is ignored. */
+  Point2d anchorPt;			/* Translated anchor point. */
+
+  XColor *outlineColor;		/* Foreground color */
+  XColor* fillColor;			/* Background color */
+
+  GC gc;				/* Private graphic context */
+  GC fillGC;				/* Shared graphic context */
+  Pixmap destBitmap;			/* Bitmap to be drawn. */
+  int destWidth, destHeight;		/* Dimensions of the final bitmap */
+
+  Point2d outline[MAX_OUTLINE_POINTS];/* Polygon representing the background
+				       * of the bitmap. */
+  int nOutlinePts;
+} BitmapMarker;
+
+extern MarkerCreateProc Blt_CreateBitmapProc;
+
+#endif