I created myself a parser that has quite some rules. Now I discovered that in the format there are comments possible. The type of comments is quite common. One format for single line comment and one for multiline comments. The comments are not described as part of the format. So now I'm trying to get a solution how to parse the comments. Basically the can appear anywhere in the text. I could do it by first removing the comments and then parsinf the format. But hopefully there is something more smart. thanks, Norbert