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diff --git a/pd/extra/expr~/help-expr.pd b/pd/extra/expr~/help-expr.pd
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@@ -1,231 +0,0 @@
-#N canvas 0 0 1024 745 10;
-#X obj 75 416 expr 1;
-#X floatatom 239 384 0 0 0;
-#X floatatom 75 446 0 0 0;
-#X msg 75 388 bang;
-#X obj 143 414 expr 2 + 3;
-#X msg 143 387 bang;
-#X floatatom 143 442 0 0 0;
-#X floatatom 238 442 0 0 0;
-#X obj 238 414 expr 2+$f1;
-#X floatatom 76 485 0 0 0;
-#X floatatom 76 542 0 0 0;
-#X obj 76 514 expr $f1 * $f2;
-#X floatatom 155 485 0 0 0;
-#N canvas 0 0 450 300 graph1 0;
-#X coords 0 10 10 0 200 150 1;
-#X array array1 10 float 0;
-#X restore 472 362 graph;
-#X floatatom 77 580 0 0 0;
-#X floatatom 77 636 0 0 0;
-#X floatatom 236 484 0 0 0;
-#X floatatom 236 541 0 0 0;
-#X obj 236 513 expr $s2[$f1];
-#X msg 309 485 symbol array1;
-#X obj 77 608 expr sin(2 * 3.14159 * $f1 / 360);
-#X msg 429 554 \; array1 1 4 2 8 5 6 1 4 2 8 5 6;
-#X text 81 345 expr examples:;
-#X text 66 10 expression evaluation family - expr \, expr~ \, fexpr~
-;
-#X text 66 188 Syntyax:;
-#X text 67 260 $f#: float input variable;
-#X text 68 275 $s#: symbol input variable;
-#X text -37 708 expr~ examples:;
-#X obj 30 911 print~;
-#X msg 67 890 bang;
-#X obj 30 832 sig~ 440;
-#X floatatom 103 849 0 0 0;
-#X floatatom 30 809 0 0 0;
-#X obj 30 872 expr~ $v1*$f2;
-#X obj 139 912 print~;
-#X msg 155 891 bang;
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-#X floatatom 212 826 0 0 0;
-#X floatatom 411 847 0 0 0;
-#X floatatom 298 823 0 0 0;
-#X obj 298 850 osc~;
-#X msg 526 670 \; pd dsp 0;
-#X msg 448 672 \; pd dsp 1;
-#X text 451 649 audio on;
-#X text 534 648 audio off;
-#X text 274 314 comment;
-#X text 9 792 vector times scalar;
-#X text 141 792 vector;
-#X obj 297 910 dac~;
-#X text 295 801 frequency;
-#X text 427 829 amplitude;
-#X text 497 116 Used for expr~ only:;
-#X text 499 139 $v#: signal (vector) input (vector by vector evaluation)
-;
-#X text 494 172 Used for fexpr~ only:;
-#X text 495 242 $y[n]: the output value indexed by n where n has to
-satisfy 0 > n >= -vector size.;
-#X text 489 282 (the vector size can be changed by the "block~" object.)
-;
-#X text 493 191 $x#[n]: the sample from inlet # indexed by n where
-n has to satisfy 0 => n >= -vector size \, ($x# is a shorthand for
-$x#[0] \, specifying the current sample);
-#X floatatom 81 1300 0 0 0;
-#X floatatom 214 1319 0 0 0;
-#X msg 181 1279 -10;
-#X text 8 1099 fexpr~ examples:;
-#X obj 80 1567 print~;
-#X msg 88 1547 bang;
-#X floatatom 80 1471 0 0 0;
-#X obj 80 1500 sig~ 1;
-#X obj 81 1343 fexpr~ ($x1[$f2]+$x1)/2;
-#X obj 80 1528 fexpr~ $x1+$y[-1];
-#X floatatom 590 1362 0 0 0;
-#X floatatom 750 1383 0 0 0;
-#X obj 585 1452 dac~;
-#X obj 587 1403 fexpr~ ($x1[$f2/1000]+$x1)/2;
-#X msg 819 1313 0 10000;
-#X obj 750 1364 line 0;
-#X msg 753 1314 -10000;
-#X obj 75 1385 dac~;
-#X text 51 1223 Simple FIR filter;
-#X text 512 1130 Simple FIR filter using fractional offset;
-#X msg 659 1314 -10000 10000;
-#X obj 590 1383 osc~ 2205;
-#X msg 599 1339 1102.5;
-#X msg 817 1338 0 10000;
-#X msg 751 1339 -20000;
-#X msg 657 1339 -20000 10000;
-#X msg 590 1314 2205;
-#X text 88 1611 end;
-#X msg 503 1308 start;
-#X msg 505 1330 stop;
-#X msg 12 1280 start;
-#X msg 11 1305 stop;
-#X msg 30 1465 start;
-#X msg 29 1490 stop;
-#X obj 446 1331 loadbang;
-#X obj -27 1491 loadbang;
-#X obj -44 1305 loadbang;
-#X text 572 1287 frequency;
-#X text 662 1296 of the simple filter;
-#X msg 248 1278 -20;
-#X obj 81 1321 osc~ 2205;
-#X msg 111 1277 1102.5;
-#X msg 65 1277 2205;
-#X msg 215 1278 0;
-#X text 78 1441 simple accumulator defined as and an IIR filter;
-#X obj 139 871 expr~ $v1*$v2;
-#X text 7 1144 NOTE: fexpr~ could use lots of CPU power \, by default
-fexpr~ is on when it is loaded. In this page we are turning them off
-with loadbang \, so to hear them you have to turn them on explicitly.
-You can use the "start" and "stop" messages to start and stop fexpr~
-and expr~;
-#X text 65 101 expr~ is used for expression evaluaion of signal data
-on the vector by vector basis;
-#X text 66 85 expr is used for expression evaluaion of control data
-;
-#X text 661 1284 index defining the frequency;
-#X text 50 1236 -10 offset will fully filter audio frequency of 2205
-\, and -20 offset will filter audio at frequency of 1102.5;
-#X text 514 1211 Thus \, the offset -10000 will filter audio at frequency
-of 2205 and the offset value -20000 will filter the audio at frequency
-of 1102.5.;
-#X text 513 1157 When fractional offset is used \, fexpr~ determines
-indexed by linear interpolation. In the following example the offset
-value is divided by 1000 \, thus we can continuously change the offset
-without an audible click in the output.;
-#X text 243 1314 If you change this value you;
-#X text 245 1326 hear a click;
-#X text 77 670 make sure you turn on audio for the expr~ and fexpr~
-examples;
-#X text 64 38 For a more detailed documentaion refer to http://www.crca.ucsd.edu/~yadegari/expr.html
-;
-#X text 67 203 The syntax is very close to how expressions are written
-in C. Variables are specified as follows where the '#' stands for the
-inlet number:;
-#X text 68 246 $i#: integer input variable;
-#X text 67 138 fexpr~ is used for expression evaluaion on sample level
-data \; i.e. \, filter design. Warning: fexpr~ is very cpu intensive.
-;
-#X floatatom 792 826 5 0 0;
-#X obj 545 875 tabsend~ a1;
-#N canvas 0 0 450 300 graph4 0;
-#X coords 0 1 63 -1 200 140 1;
-#X array a1 64 float 0;
-#X restore 546 897 graph;
-#X obj 545 852 expr~ max(min($v1 \, $f2/10) \, -$f2/10);
-#X obj 545 828 osc~ 4000;
-#X text 13 730 NOTES: the first inlet of expr~ cannot be a $f1 or $i1
-\, this may change in later releases;
-#X text 535 775 A simple limiter example;
-#X text 718 800 Move the value below between 0 and 10 to change the
-limiter threshold;
-#X obj 410 714 vsl 15 128 0 127 0 0 empty empty empty 20 8 0 8 -262144
--1 -1 0 1;
-#X obj 297 871 expr~ $v1*$f2/128;
-#X text 641 12 updated for Pd 0.35-35 test 8 and expr* 0.3;
-#X connect 0 0 2 0;
-#X connect 1 0 8 0;
-#X connect 3 0 0 0;
-#X connect 4 0 6 0;
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