Uuencoding and Posting
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`gnus-uu-post-include-before-composing'
     Non-`nil' means that `gnus-uu' will ask for a file to encode
     before you compose the article.  If this variable is `t', you can
     either include an encoded file with `C-c C-i' or have one included
     for you when you post the article.

`gnus-uu-post-length'
     Maximum length of an article.  The encoded file will be split into
     how many articles it takes to post the entire file.

`gnus-uu-post-threaded'
     Non-`nil' means that `gnus-uu' will post the encoded file in a
     thread.  This may not be smart, as no other decoder I have seen
     are able to follow threads when collecting uuencoded articles.
     (Well, I have seen one package that does that--`gnus-uu', but
     somehow, I don't think that counts...) Default is `nil'.

`gnus-uu-post-separate-description'
     Non-`nil' means that the description will be posted in a separate
     article.  The first article will typically be numbered (0/x).  If
     this variable is `nil', the description the user enters will be
     included at the beginning of the first article, which will be
     numbered (1/x).  Default is `t'.