This article lists the name prefixes used in the [[doomsday]] source code.
The most abstract class in each category is marked with an asterisk (*).


====== Base-level ======


^ Prefix^ Meaning |
| CP| Control Panel |
| DD (*)| Base-level/general (Doom to the 2<sup>nd</sup> power) |
| DED| [[ded]] file handling |
| Def| Definitions (don't use "DD") |
| MPI| Multi-Player (User) Interface |
| Plug| [[plugin]] |
| UI| User Interface |
| Z| [[memory_zone]] |
| W| [[wad]] |



====== Console ======


^ Prefix^ Meaning |
| B| [[bindings]] |
| Con (*)| [[console]] (a.k.a., the future brains of the engine) |



====== System (general interface to the OS) ======


^ Prefix^ Meaning |
| Dir| Directory/filename handling |
| DM| Low-level Music driver (Windows Multimedia, FMOD) |
| DS| Low-level Sound driver (DSound+EAX, A3D) |
| F| File access (input) |
| I| Input |
| N| Low/system level networking (TCP/IP) |
| Sys (*)| System (e.g. timing, Windows console; Win32 API access) |
| SW| Startup window |



====== Network and communications ======


^ Prefix^ Meaning |
| Cl| Specific to Client |
| Demo| Specific to [[demo]]s |
| Msg| Network message handling |
| Net   (*)| General (high level) networking |
| Sv| Specific to Server |



====== Playsim & game world ======


^ Prefix^ Meaning |
| Arc| Archiving (savegames, for the future) |
| P     (*)| Playsim, playworld ("laws of physics") |
| PO| [[poly_object|Poly Object]] |



====== Renderer ======

Drawing views of the world; built on top of refresh.

^ Prefix^ Meaning |
| C| [[clipping|Clipper]] (engine-internal) |
| DL| [[dynamic_light|Dynamic Lighting]] (engine-internal) |
| H| [[lens_flare|Halos]] (lens flares, engine-internal) |
| PG| [[particle_generator|Particle Generator]] |
| Rend  (*)| Renderer |
| RL| Rendering List (engine-internal) |



====== Refresh and resource management ======


^ Prefix^ Meaning |
| R  (*)| [[refresh]]/Resources (handling of [[texture]]s, [[model]]s, etc.) |
| SB| [[bias_lighting|Shadow Bias]] |
| SBE| [[bias_light_editor|Shadow Bias Editor]] |



====== Graphics (drawing routines, DGL) ======


^ Prefix^ Meaning |
| FR| Font Renderer (engine-internal) |
| GL    (*)| [[dgl|Graphics Library]] (simple drawing routines, textures) |
| PCX| [[pcx]] handling |
| PNG| [[png]] handling |
| TGA| [[targa]] handling |



====== Audio ======


^ Prefix^ Meaning |
| Chn| Channel in the Sfx module |
| S     (*)| Sound and Music (high-level interface, exported) |
| Sfx| Sound Effects module |
| Mus| Music module |



====== Miscellaneous ======


^ Prefix^ Meaning |
| Arg| Command line arguments (no underscore) |
| bams| Trigonometry with binary angles (no underscore) |
| M     (*)| Miscellaneous utilities (don't fit in any other category) |
| NP| [[node_pile]] |
| Str| Dynamic strings |
| U| Utilities (other "pure" utils, not DD specific) |