No definition for fragmentation analysis

[nascif]

I found about it by accident (in an error message). I tried to infer what it does from the code but it would be nicer to have an example and proper documentation.

[adamtornhill]

Yes, I'd like to include a complete list of all analyses in the help text to start with. I think there are a few more I haven't documented. I'd also like to document them all here on github.