I tried to change the ShowInfo preprocessor in tphotkey.i so that Ctrl-T would bring up the field-level info, but I can't get it to work. Furthermore, the initial setting of Ctrl-Y doesn't work either.
The problem was that the HotKey preprocessor also had Ctrl-T assigned to it. Once I changed it to something else (i.e. Ctrl-K), I was able to get Ctrl-T to do its normal duty