Hi, I want to avoid wrong ligatures by using "| at the specific points. But this doesn't work with headings, resp.with the table of contents (see error log below). Using \/ instead of "| is no alternativ as it looks too close to ligatures. Does anybody know a workaround for this problem? Thank you, Steffen LOG: ! Undefined control sequence. <argument> \bookmarktext \doPDFbookmark ... count \ifcase #5-\fi #2 \fi {#3 } \doPDFinsertbookmark ... \scratchcounter } open #5 \egroup <argument> \flushbookmark \dodoputbookmarkelement {EbeneDrei}{6}{2.1}{Auftr\... \secondoftwoarguments #1#2->#2 l.129 ...nenarchitektur}{1::0:I:2:1:0:0:0::14}{14} ?