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diff --git a/help/pix_opencv_matchshape-help.pd b/help/pix_opencv_matchshape-help.pd
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+#X msg 570 103 contour 4 2 0 0 0 1 1 1 1 0;
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+#X obj 624 357 route match_vec template_vec;
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+#X text 631 390 found corresponding contour;
+#X floatatom 624 435 5 0 0 0 - - -;
+#X floatatom 659 435 5 0 0 0 - - -;
+#X text 623 448 id;
+#X text 659 448 absolute difference from template;
+#X floatatom 706 378 5 0 0 0 - - -;
+#X text 740 375 number of loaded contour;
+#X text 593 213 method to compare shape (1 \, 2 or 3 \, please refer
+to OpenCV doc for details);
+#X text 37 193 This external uses cv::matchShapes function. Documentation
+is here : http://docs.opencv.org/modules/imgproc/doc/structural_analysis_and_shape_descriptors.html?highlight=matchshapes#matchshapes
+;
+#X text 588 266 threshold behind wich a shape is recognized;
+#X text 575 135 template message add a template to library;
+#X text 549 46 contour message compare the contour to each loaded contour
+;
+#X text 37 103 [pix_opencv_matchshape] compares input images or input
+contours to a library of images (or contours). It sends out the id
+of the closest found behind a threshold.;
+#X text 37 143 You can use pix_opencv_contour_convexhull2 to find all
+contours in the image and send them to pix_opencv_matchshape to recognize
+it.;
+#X text 20 79 Description: compares shapes;
+#X text 45 24 Synopsis: [pix_opencv_matchshape];
+#X text 67 40 Class: pix_opencv;
+#X text 76 296 none;
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