T - Enter Chat.
ALT - Show Mouse (should be used to navigate through the radial menus)
For the third eye you must Right Click
Z - Use Hotbar
L - Lock car
M - Cellphone
B - Seatbelt
CTRL - Crouch
/me - Message that is Proximity Based (Only for people that are around you).
/anon - To write a Tweet in anonymous mode.
/cctv - To respond to inquiries about CCTV footage (known as “CCTV Results”).
/cash or /bank - Show your cash and money balance
/atm - To access the ATM (must have an ATM card from a bank)
/id - See whats your ID
Tab Button - Inventory (ESC to exit) - Drag and Drop Items where needed. “Use” is to use.
PAGE UP - vMenu
PAGE DOWN - Full Emote Menu (which all can be used with /e and the emote name). You can also change the walk style here, too.
F1 - Radial Menu (Includes job functions, citizen functions, etc.)