long lines of code with Haddock

Hello, Haddock 0.6 produces output where code generated from non-comment source (like the declarations in the synopsis) is not split across multiple lines. Since my type declarations are rather long, the Haddock-produced lines get much larger than my screen when shown in a web browser. How can I make Haddock split these lines and maybe even indenting lines to produce a nice layout? The documentation of the hierarchical libraries seems to use an automatic line breaking feature. Wolfgang