[pmwiki-users] setting link to itself (for lang setting)

[lists at basel-inside.ch]

I use a include named HeaderBar with links like:
* Lang:[[{*$FullName}?setlang=de|D]]  [[{*$FullName}?setlang=en|E]] 

In case of Categories there is a "false" link, as Category/NameOfCat  
doesn't exist:
Expl:
http://orientalcarpetstudio.com.jovinus-meta.net/Category/Mittelgross

Is there a pmwiki variable that points to itself, without modifiying the url?

thanks in advance

regards
Patrick Ogay