> What is it? with a effort i could understand that Weave and Tangle new

Sorry. This terminology (which is pretty bad, really) was introduced by
Knuth in his work on "literate programming" (and specifcally in the
construction of the TeX typesetting system).

 There is a newsgroup just for this topic (which I haven't looked at for
a while:-) but its FAQ appears to be here (among other places)

ftp://ftp.cs.uu.nl/pub/NEWS.ANSWERS/literate-programming-faq

David


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