meaning of bits:
0 = Building 
1 = Addon 
2 = Flyer 
3 = Worker 
4 = Subunit 
5 = Flying Building 
6 = Hero 
7 = Regenerates HP 
8 = Animated Idle 
9 = Cloakable 
10 = 2 Units in 1 Egg 
11 = Neutral Accessories 
12 = Resource Depot 
13 = Contains Gas 
14 = Robotic Unit 
15 = Detector 
16 = Organic unit 
17 = Creep Building 
18 = Unused 
19 = Required Psi 
20 = Burrowable 
21 = Spellcaster 
22 = Permanent Cloak 
23 = NPC / Accessories 
24 = Morph from other unit 
25 = Large Unit? 
26 = Huge Unit? 
27 = Auto Attack and Move 
28 = Attack 
29 = Invincible 
30 = Mechanical 
31 = Produces Units