appearance/ tweaks

There are various plugin hooks within ewiki, which allow to mangle text
strings and data immediately before it would be returned as output.
prev << "linking/xfn"
next >> "appearance/listpages_br"

You cannot modify the README.plugins file, but anyhow any ideas or suggestion should as usually get filed on BugReports, UserSuggestions or even better the README.plugins.Discussion.