Why no legend or key to symbols somewhere on the  sketch maps?

I know thats what i thought, it would be quite useful, you could make a 'in map legend though, by using the text and relevant lines/symbols.

Completely agree with both of you and I will get round to it soon. By the way, there seems to be a bug with the appended text boxes in the sketch maps which needs looking at. I have made a little change to the Burbage Boulders sketch map so that it will display as a jpeg now.