Units

S - SCV
M - Marine
F - Firebat
C - Medic
G - Ghost
V - Vulture
T - Tank
G - Goliath
W - Wraith
D - Dropship
V - Science Vessel
B - Batlecruiser
Y - Valkyrie

Spells

S - Scanner Sweep (ComSat Station)
T - Stim Pack (Marines & Firebats)
A - Heal (Medics)
R - Restoration (Medics)
A - Optic Flare (Medics)
Y - Yamato (Battlecruisers)
L - Lockdown (Ghosts)
C - Cloaking (Ghosts & Wraiths)
D - Defensive Matrix (S.V.)
I - Irradiate (Science Vessels)
E - EMP (Science Vessels)

Specials

L - Load (Bunkers & Dropships)
U - UnLoad (Bunkers & Dropships)
O - Siege/Tank Mode (Tanks)
I - Use Spider Mines (Vultures)
N - Nuclear Strike (Ghosts)
N - Arm Nuclear Silo

B - Basic Structure

Then...

C - Command Center
S - Supply Depot
R - Refinery
B - Barracks
E - Engineering Bay
T - Missle Turret
A - Academy
U - Bunker

V - Advanced Structures.

Then....

F - Factory
S - Starport
I - Science Facility
A - Armory

C - ComSat Station (C.C.)
N - Nuclear Silo (C.C.)
C - Machine Shop (Factory)
C - Covert Ops (Science Facility)
P - Physics Labs (Science Facility)

Engineering Bay

W - Infantry Weapons
A - Infantry Armor

U - U-238 Shells
T - Stim Pack Tech
R - Restoration
F - Optic Flaren
D - Caduceus Reactor

Armory

W - Vehicle Weapons
P - Vehicle Plating
S - Ship Weapons
H - Ship Plating

Machine Shop

I - Ion Thrusters
M - Spider Mines
S - Siege Tech
C - Charon Boosters

Control Tower

C - Cloaking Field
A - Apollo Reactor

Science Facility

E - Research EMP
I - Research Irradiate
T - Research Titan Reactor

Covert Ops

L - Research Lockdown
O - Ocular Implants
M - Moebius Reactor
C - Personal Cloaking

Physics Lab

Y - Yamato Gun
C - Colossus Reactor