My keyboard, both at home and at work has the behaviour that, when I hold down left-shift and press t and r keys simultaneously (or nearly simultaneously), neither (or only one) of T and R appears, but not both. Right shift has no problems. Other pairs of letters seem to work fine with left-shift, but some don't: u and y, and p and [
Another keyboard here doesn't have this problem. I'm just using cheap keyboards, I guess.
<more experimentation...>
some keys are "inhibitor" keys: t, in conjunction with left-shift, inhibits the disply of both itself, and vfr45 and b
If you must know, some constants in the software I'm working on include the word STRING. That's why.
Cheers, Carl.
