subsubsubparagraph...

Hi,

i got a problem in writing a docummentation: I would like to 
implement a "subsubsubparagraph" (something like "1.4.3.2 
blabla"), but with subsubparagraph the implemented ways to do 
such things seems to be exhausted. But as I can see in other 
documentations (not written with Lyx, I guess) there are 
[3sub]paragraphs. Written by hand? Because I can't see it in 
content, too.

Tried google, of course, it didn't tell me that far.

Regards, Urs...