DP SV POINTPARTICLES
From Quake Wiki
float(string effectname) particleeffectnum = #335; // same as in CSQC void(entity ent, float effectnum, vector start, vector end) trailparticles = #336; // same as in CSQC void(float effectnum, vector org, vector vel, float howmany) pointparticles = #337; // same as in CSQC
Provides the ability to spawn non-standard particle effects, typically these are defined in a particle effect information file such as effectinfo.txt in darkplaces.
Warning: server must have same order of effects in effectinfo.txt as client does or the numbers would not match up, except for standard quake effects which are always the same numbers.