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diff --git a/abs/mtx_cart2sph-help.pd b/abs/mtx_cart2sph-help.pd
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+#N canvas 0 0 450 300 10;
+#X obj 69 114 mtx 3 1;
+#X text 126 70 2 ey;
+#X text 144 94 3 ez;
+#X text 264 202 Franz Zotter \, 2009;
+#X text 19 11 converting cartersian to spherical coordinates;
+#X msg 26 49 1 0 0;
+#X text 81 47 1 ex;
+#X obj 69 147 mtx_cart2sph;
+#X msg 69 71 0 2 0;
+#X msg 97 91 0 0 3;
+#X text 219 62 input matrices have the shape 3xL;
+#X text 221 76 and may contain L points;
+#X text 219 93 [ x \; y \; z ];
+#X obj 69 191 mtx_print rphitheta;
+#X connect 0 0 7 0;
+#X connect 5 0 0 0;
+#X connect 7 0 13 0;
+#X connect 8 0 0 0;
+#X connect 9 0 0 0;