Lexique

BSP : Binary Space Partitionning

DLL : Dynamic Link Library

FGD : Forge Game Data

HL2 : Half-Life 2

PRT : PoRTal

QC : QuakeC

RES : RESsource list

SMD : StudioModel Data

VCD : Valve Choreography Data

VGUI : Valve Graphical User Interface

VMT : Valve MaTerial

VPC : Valve Project Creator

VPK : Valve PaK

VRAD : Valve RADiosity

VTF : Valve Texture Format

VVIS : Valve Visible Information Set

WAD : Where's All the Data