-Ikiwiki requires [[MarkDown]] be installed, and also uses the following
-perl modules if available: `CGI::Session` `CGI::FormBuilder` (version
-3.02.02 or newer) `HTML::Template` `Mail::SendMail` `Time::Duration`
-`Date::Parse` (libtimedate-perl), `HTML::Scrubber`, `RPC::XML`,
-`XML::Simple`
+Ikiwiki is a perl program, and needs a recent version of perl such as
+5.8.8. (5.8.0 has been reported not to work).
+
+Ikiwiki requires the [[cpan Text::MarkDown]], [[cpan URI]] and
+[[cpan HTML::Parser]] perl modules be installed, and also uses the
+following perl modules if available:
+[[cpan CGI::Session]], [[cpan CGI::FormBuilder]] (version 3.02.02 or newer,
+but 3.0401 might be broken),
+[[cpan HTML::Template]], [[cpan Mail::Sendmail]], [[cpan Time::Duration]]
+[[cpan TimeDate]], [[cpan HTML::Scrubber]], [[cpan RPC::XML]],
+[[cpan XML::Simple]], [[cpan XML::Feed]], [[cpan File::MimeInfo]].
+
+The [[tla]] support also needs the [[cpan MailTools]] perl module.
+
+Various [[plugins]] use other libraries and utlities; see their individual
+documentation for details.