	rotateAt: function(angle, a, b){		// summary: rotates a picture using a specified point as a center of rotation		// description: Compare with dojox.gfx.matrix.rotate().		// angle: Number: an angle of rotation in radians (>0 for CCW)		// a: Number: an x component of a central point		// b: Number: a y component of a central point				// accepts several signatures:		//	1) rotation angle in radians, Point		//	2) rotation angle in radians, x, y				if(arguments.length > 2){			return dojox.gfx.matrix._sandwich(dojox.gfx.matrix.rotate(angle), a, b); // dojox.gfx.matrix.Matrix2D		}				// branch		// angle: Number: an angle of rotation in radians (>0 for CCW)		// a: dojox.gfx.Point: a central point		// b: null		return dojox.gfx.matrix._sandwich(dojox.gfx.matrix.rotate(angle), a.x, a.y); // dojox.gfx.matrix.Matrix2D	},
5168	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5168/bfda1c9f1846eb67378f9313bc2f6a7339497b54/matrix.js/buggy/gfx/matrix.js