my problem is now the first line of the PDF-Document:
\underline{PDF-Document:}[l]\\%
~\\
In this way it begins with a TAB. With [l] I wanted that the first line remains left, but [l] isnt accepted and is printed, so it is shown at the PDF doc.
Thanks and best regards.
Using
\begin{flushleft}\underline{PDF-Document:}\end{flushleft}
soled the problem.
Are there better options than using "flushleft", some solution with any box-Class? Now I am using for all texts "flushleft".