The question came up in the Facebook Gregg shorthand group about how not all homophones are written the same, with reference to brief forms. For example, g-r = great, but not grate. B-t = but, but not butt. B = by, but not buy, etc.
I think this happens when the words are spelled differently (morning/mourning), but not when they are spelled the same (“wellspring” uses the l brief form, for instance).
Is there an explanation about this anywhere in the Gregg theory materials?
Lee