(Remark: Maybe this is a typically German problem, I'm not sure in which other languages that might be relevant)
Sometimes there are words which start with a hyphen, as they are connected with a word used before, e. g. Werkstoffforschung und -entwicklung is a shorter (and I think more elegant) way to say Werkstoffforschung und Werkstoffentwicklung.
However, if the second word, which starts with the hyphen, is at the beginning of a new line, it can happen that the hyphen stays in the previous line and the word itself is the first one in the next line.
Minimal example:
\documentclass[11pt]{scrreprt}
\usepackage[ngerman]{babel}
\begin{document}
Das ist ein Mustertext, der dazu da ist, um diese aa Textsatzproblematik
bzw. -schwierigkeit zu demonstrieren
\end{document}
(I hope that the example "works" for you to demonstrate the problem, when I typeset it with pdflatex, the "-" is at the end of the first line and the "schwierigkeit" is in the second one which is not wanted.)
Is there a smart* way to avoid that problem?
* pdflatex shall handle this automatically and "know" that a hyphen at the beginning of a word always has to stay connected to the word and shall not be separated from it.
{}
.:-D
bzw.\
for correct spacing.\frenchspacing
.