From Valve Developer Community
- Wait Till Seen : [
1
]
- Gag (No IDLE sounds until angry) : [
2
]
- Fall to ground (unchecked means *teleport* to ground) : [
4
]
- Drop Healthkit : [
8
]
- Efficient - Don't acquire enemies or avoid obstacles : [
16
]
- No Rotorwash : [
32
]
- Await Input : [
64
]
- Wait For Script : [
128
]
- Long Visibility/Shoot : [
256
]
- Fade Corpse : [
512
]
- Think outside PVS : [
1024
]
- Template NPC (used by npc_maker, will not spawn) : [
2048
]
- Do Alternate collision for this NPC (player avoidance) : [
4096
]
- Don't drop weapons : [
8192
]