I needed to change the bullets of an enumeration, so that it looks like /LF10/, /LF20/, /LF30/ etc.
I googled the German tex usenet group and found a quite nice hint. There is a package called enumitem that realizes exactly that. It only has one bug, it sets the value of the left indent to zero. Achim Blumensath offers a corrected version of enumitem on his webpage for download.

How to use enumitem:

\item foo
\item bar

Latex recognizes the 1 in the optional parameter for the enumeration as enumeratable item and enumerates this number.