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diff --git a/reference/z~-help.pd b/reference/z~-help.pd
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+#N canvas 304 271 597 497 10;
+#X obj 125 42 z~;
+#X text 177 41 samplewise delay;
+#X text 168 89 should make FIR-filter design possible;
+#X obj 65 222 osc~ 440;
+#X floatatom 65 191 0 0 0 0 - - -;
+#X obj 97 270 z~;
+#X obj 127 270 z~ 2;
+#X obj 65 310 +~;
+#X text 235 269 4th order moving average filter;
+#X text 193 298 creation argument : delay in samples (default is 1)
+;
+#X text 167 119 (note that you cannot do IIR-filters easily this way
+!);
+#X text 351 42 z;
+#X text 359 36 -N;
+#X obj 65 336 *~ 0.25;
+#X text 442 11 part of zexy;
+#X obj 167 270 z~ 3;
+#X obj 65 384 tabwrite~ \$0scope;
+#X msg 82 361 bang;
+#X obj 258 388 table \$0scope;
+#X connect 3 0 7 0;
+#X connect 3 0 5 0;
+#X connect 3 0 6 0;
+#X connect 3 0 15 0;
+#X connect 4 0 3 0;
+#X connect 5 0 7 0;
+#X connect 6 0 7 0;
+#X connect 7 0 13 0;
+#X connect 13 0 16 0;
+#X connect 15 0 7 0;
+#X connect 17 0 16 0;