This is a site that I found that I though might help some people,and myself with chord patterns situated for 7 strings.Hope this works for you. http://www.gootar.com/folder/guitar7.html
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I've plunked around on this site before.
Have you figured out how to set alternate tunings? I know there's a bunch listed, but the two I want (Major 3rds and Fripp's NST with an extra lower 5th) aren't preprogramed.
Ray