teacl/lib/tst.tec

10u.n ! put 10 in main-level q-register .n !
@^U1/20u.n:m2/27:^U1 ! put 20u.n$:m2$$ in q-register 1 !
@^U2/:m3/27:^U2 ! put :m3$$ in q-register 2 !
@^U3/q.n=/27:^U3 ! put q.n=$$ into q-register 3 !