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diff --git a/externals/gridflow/doc/flow_classes/#rotatificator-help.pd b/externals/gridflow/doc/flow_classes/#rotatificator-help.pd
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+#N canvas 604 245 632 581 10;
+#X obj 0 0 doc_h;
+#X obj 0 552 doc_f;
+#X obj 20 64 #rotatificator;
+#X text 191 138 named in honour of Laszlo Zlotz (a character from Achille
+Talon);
+#X obj 3 532 doc_also;
+#X obj 103 532 #rotate;
+#X obj 3 286 doc_i 2;
+#X obj 3 418 doc_o 1;
+#X obj 14 448 doc_oo 0;
+#X obj 14 316 doc_ii 0;
+#X obj 14 386 doc_ii 1;
+#X obj 97 316 doc_m i0 float;
+#X obj 97 338 doc_m i0 axis;
+#X obj 3 180 doc_c 3;
+#X obj 14 210 doc_cc 0;
+#X obj 14 232 doc_cc 1;
+#X obj 14 254 doc_cc 2;
+#X obj 97 448 doc_m o0 grid;
+#X obj 97 386 doc_m i1;
+#X obj 97 210 doc_m c0 float/int;
+#X obj 97 232 doc_m c1 float/int;
+#X obj 97 254 doc_m c2 float/int;
+#X text 232 210 from;
+#X text 232 232 to;
+#X text 232 254 n;
+#X text 232 338 \$1=from (default:0) \; \$2=to (default: 1) \; \$3=n
+(default: 2);
+#X text 232 386 angle;
+#X text 232 316 scale;
+#X text 192 44 generates a N by N rotation matrix that rotates through
+two dimensions of your choice (from \, to) by a certain angle (in centidegrees).
+values produced are integers. the rotation matrix is multiplied by
+the given scale factor such that after an eventual [#inner] \, a division
+by the same amount would be performed. greater scale factors are more
+precise.;
+#X text 232 448 rotation matrix such that if rows 'from' and 'to' were
+deleted and columns 'from' and 'to' were deleted \, you'd have an identity
+matrix. in other words \, the rotation happens in a plane space made
+of the two dimensions represented by those two rows and two columns.
+;
+#X connect 4 1 5 0;
+#X connect 11 1 27 0;
+#X connect 12 1 25 0;
+#X connect 17 1 29 0;
+#X connect 18 1 26 0;
+#X connect 19 1 22 0;
+#X connect 20 1 23 0;
+#X connect 21 1 24 0;