Comment 3 for bug 170340

my apologies, much of the information linked below is
currently offline. let me know if it might be helpful.

http://www.peepo.co.uk/temp/gui-schema is a GUI
schema (2004), though W3C has since developed
something similar.
This could be useful accessibility metadata to author.

Chaals, Schepers, and possibly me will be developing
new guidelines in the coming months.

a related project is: 1081266
https://sourceforge.net/
tracker/?func=detail&atid=604309&aid=1081266&group_id=93438

NB http://www.cs.cmu.edu/~biglou/ on human computation