The XSLT supports a wide collection of HTML tags like basic formatting tags to lists. This should be on the same line.
This is bold
This is strong
This is italic
This is emphasized
This is code
This is bold code
This is bold italic
This is bold emphasized
The following text is preformatted and therefor should be shown verbatim < four spaces < six spaces < one tab This text is shown bold in HTML but really AS IS in TWiki. This is due to a limitation but it's a nice side effect.