are also available in other plugins.
There are several implementations of markdown support that can be used by
-this plugin. The [original version of
-markdown](http://daringfireball.net/projects/markdown/) can be used, or the
-[[!cpan Text::Markdown]] perl module.
+this plugin. In order of preference:
+
+* [Discount](http://www.pell.portland.or.us/~orc/Code/discount/),
+ via the [[!cpan Text::Markdown::Discount]] perl module.
+ This implementation is considered to be the default and is strongly
+ recommended, but it is not mandatory because it requires an external
+ C library.
+* The [[!cpan Text::Markdown]] perl module.
+* The [original version of markdown](http://daringfireball.net/projects/markdown/).
[[!cpan Text::MultiMarkdown]] can be used in order to use tables, footnotes,
and other new features from the markdown variant called
-[multimarkdown](http://fletcherpenney.net/MultiMarkdown/). Multimarkdown is
+[multimarkdown](http://fletcherpenney.net/MultiMarkdown/) (some of which
+are also available in the recommended implementation, Discount). Multimarkdown is
not enabled by default, but can be turned on via the `multimarkdown` option
in the setup file. Note that multimarkdown's metadata and wikilinks
-features are disabled when it's used with ikiwiki.
+features are disabled when it's used with ikiwiki. Also note that if the
+`multimarkdown` option is enabled, it takes priority over Discount, which
+might cause formatting that is understood by Discount to be ignored.