- `**` token for bold and `//` token for italic. Note that they should be matched by themselves, i.e. one can't use `'''` to match `**` or `''` to match `//`
- `[[target]]` or `[[target|label]]` TracLinks. If `target` has to contain a `|` character, it must be wrapped in a string quote, as usual with TracLinks. The content of `[[]]` can't contain the `]]` substring.
Note that support for the [[http://meta.wikimedia.org/wiki/Help:Piped_link#Pipe_trick|pipe trick]] is simply "emulated" (and to some extent only), as the wiki text is not converted before save. It is consistent with the removal of the scheme we do anyway. The reverse pipe trick is not operational yet.
