Tandy 1000 SL Technical Reference Manual page 587

NOTES
Note1 +NT
05H
is invoked and a screen dump is performed
Note2 --the scroll lock active bit is toggled
Note3 --the pause state is initiated
Note4 -1NT 1BH is invoked
Note5 --the numlock active bit is toggled
Note6 -ALT num pad generates raw ascii code of typed number
Note7 - - t h e caps lock active bit is toggled
Note8 +old
shift lock active u n t i l key is released
Note9 - - h o l d control shift active until key is released
Note l H o l d altcrnate shift active until key is released