Код
TE_SetupBSPDecal(const Float:vecOrigin[3], entity, index) {
TE_Start("BSP Decal");
TE_WriteVector("m_vecOrigin",vecOrigin);
TE_WriteNum("m_nEntity",entity);
TE_WriteNum("m_nIndex",index);
}
Нашел из плагина map-decals_v1.1
http://yadi.sk/d/O9uhMAoYREXcg