## 10 Graph Language Reference ¶

Msc-generator supports an extended version of the DOT language, which is fully backwards compatible with the original saving two exceptions.

- New keywords cannot be used as node names. These are `defstyle`, `defproc`, `replay`, `defdesign`, `usedesign`, `include`, `cluster`, `if`, `then` and `else`. If you want these as nodes put them in-between quotation marks.
- Msc-generator does not support graphviz HTML labels. They get parsed, but interpreted only as text.

The language of the graphs (the DOT language) is documented well on the graphviz pages at http://www.graphviz.org/. Below we just list the additions by Msc-generator.