Proposed controls...
W/A/S/D - move
Space - jump
Mouse - aim
Left mouse button - shoot
Right mouse button - use/push
Mouse roller - toggle weapons
Shift - toggle run on/off
C - duck
Z - lamp (from Jazz2) on/off
1,2,3,(...),0 - select weapon, push multiple times to toggle weapons from the same type
Esc - pause (with menu)
Pause/Break - normal pause
[ - previous weapon (in case somebody doesn't have a roller in mouse)
] - next weapon (in case somebody doesn't have a roller in mouse)

And in case you'd ever need it...
Enter - inventory