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diff --git a/examples/puredata/xtract/xtract-help.pd b/examples/puredata/xtract/xtract-help.pd
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-#N canvas 685 60 450 725 10;
-#X text 21 12 [xtract~];
-#X text 24 19 ________;
-#X text 22 52 [xtract~] provides a wrapper for the feature extraction
-library: LibXtract. Please refer to the documentation at libxtract.sourceforge.net
-\, for a full explanation of the library and the functions it provides.
-Only the operation of the PD external will be explained here along
-with a few use case scenarios.;
-#X obj 27 299 xtract~;
-#X msg 27 270 help;
-#X text 27 328 Other than this help message \, the data sent to the
-left inlet should always be a 'signal' (i.e. audio rate). This is the
-data from a which a given feature will be extracted.;
-#X obj 183 520 xtract~ mean;
-#X floatatom 133 616 10 0 0 0 - - -;
-#X floatatom 254 553 5 0 0 0 - - -;
-#X msg 183 552 list \$1;
-#X obj 133 586 xtract~ variance;
-#X obj 182 496 phasor~ 0.1;
-#X text 40 671 Below are some possible use cases (click to open):;
-#X text 27 382 The outlet may be a scalar (control rate) \, or a vector
-(audio rate) \, depending on the nature of the feature that is being
-extracted.;
-#X obj 43 695 f0;
-#X obj 84 695 mfcc;
-#X text 28 435 Any additional arguments that need to be passed to the
-feature extraction function must be provided as a list to the right
-inlet \, e.g.;
-#X text 24 231 A complete list of features may be obtained by sending
-the external a |help( message:;
-#X text 20 148 [xtract~] must always be called with one argument \,
-in the following form: [xtract~ <feature>] \, where <feature> is a
-feature supported by the LibXtract library.;
-#X text 21 198 An optional second argument can be used to explicitly
-set the blocksize for FFT-based features;
-#X connect 4 0 3 0;
-#X connect 6 0 8 0;
-#X connect 6 0 9 0;
-#X connect 9 0 10 1;
-#X connect 10 0 7 0;
-#X connect 11 0 6 0;
-#X connect 11 0 10 0;