Well, there's a treasure trove of PSA info here:
http://www.smashboards.com/showthread.php?t=246651and a lot more around the Smash Workshop on Smashboards.
Flags go like this:
XX?YY?ZZ
XX- Priority. Most of Falcon's moves have 39, so I assume that means low. A lot of Marth's moves use 3A. 32(Marth Dancing Blade) and 22(Most of Meta Knight's moves) seem to be Transcending priority.
First ?- no idea
YY- Affects whether the hitbox can affect only a grounded opponent, opponent in midair, or both.
10, 11 - Offensive collision bubble will only be in effect if opponent is grounded.
21 - Offensive collision bubble will only be in effect if opponent is in the air.
22 - Offensive collision bubble will only be in effect if opponent is in the air.,
30, 31 - Offensive collision bubble will appear regardless of opponent's state.
(List by Phantom Wings)
Second ?- I guess this affects sfx, I really don't know. Maybe both the ? flags affect sfx/
ZZ- Flags affecting hitbox property.
00 - hit
01 - none
02 - slash
03 - electricity
04 - Ice
05 - Flame
06 - Coin
07 - Cape
08 - Slip
09 - Sleep
0A - none
0B - impale (like DK's side B)
0C - Stun
0E - Flower
0F - none
10 - none
11 - slash 2
12 - hit 2
13 - Darkness
14 - Stun (more like hitlag)
15 - Aura (unfortunately the Aura effect doesn't make all characters get stronger with more damage.)
16 - Impale 2
17 - Down
18 - No Flinch
(list from OP)