What's these do?

[RaZ]

Can anybody tell me what are these "perks" ?
Already searched them, but I am not found explanations about what are they do.

I know some of them: falldamage (commando pro), combathigh (painkiller), dangerclose, lastandoffhand (ls pro), copycat, onemanarmy, omaquickchange (oma pro), tacticalinsertion

Thanks

Code:

level.scriptPerks["specialty_blastshield"] = true;
level.scriptPerks["_specialty_blastshield"] = true;
level.scriptPerks["specialty_akimbo"] = true;
level.scriptPerks["specialty_siege"] = true;
level.scriptPerks["specialty_falldamage"] = true;
level.scriptPerks["specialty_fmj"] = true;
level.scriptPerks["specialty_shield"] = true;
level.scriptPerks["specialty_feigndeath"] = true;
level.scriptPerks["specialty_shellshock"] = true;
level.scriptPerks["specialty_delaymine"] = true;
level.scriptPerks["specialty_localjammer"] = true;
level.scriptPerks["specialty_thermal"] = true;
level.scriptPerks["specialty_finalstand"] = true;
level.scriptPerks["specialty_blackbox"] = true;
level.scriptPerks["specialty_steelnerves"] = true;
level.scriptPerks["specialty_flashgrenade"] = true;
level.scriptPerks["specialty_smokegrenade"] = true;
level.scriptPerks["specialty_concussiongrenade"] = true;
level.scriptPerks["specialty_challenger"] = true;      
level.scriptPerks["specialty_tacticalinsertion"] = true;
level.scriptPerks["specialty_saboteur"] = true;
level.scriptPerks["specialty_endgame"] = true;
level.scriptPerks["specialty_rearview"] = true;
level.scriptPerks["specialty_hardline"] = true;
level.scriptPerks["specialty_ac130"] = true;
level.scriptPerks["specialty_sentry_minigun"] = true;
level.scriptPerks["specialty_predator_missile"] = true;
level.scriptPerks["specialty_helicopter_minigun"] = true;
level.scriptPerks["specialty_tank"] = true;
level.scriptPerks["specialty_precision_airstrike"] = true;
level.scriptPerks["specialty_bling"] = true;
level.scriptPerks["specialty_carepackage"] = true;
level.scriptPerks["specialty_onemanarmy"] = true;
level.scriptPerks["specialty_littlebird_support"] = true;
level.scriptPerks["specialty_primarydeath"] = true;
level.scriptPerks["specialty_secondarybling"] = true;  
level.scriptPerks["specialty_combathigh"] = true;
level.scriptPerks["specialty_c4death"] = true;
level.scriptPerks["specialty_explosivedamage"] = true;
level.scriptPerks["specialty_copycat"] = true;
level.scriptPerks["specialty_laststandoffhand"] = true;
level.scriptPerks["specialty_dangerclose"] = true;

level.scriptPerks["specialty_extraspecialduration"] = true;
level.scriptPerks["specialty_rollover"] = true;
level.scriptPerks["specialty_armorpiercing"] = true;
level.scriptPerks["specialty_omaquickchange"] = true;
level.scriptPerks["specialty_fastmeleerecovery"] = true;

level.scriptPerks["_specialty_rearview"] = true;
level.scriptPerks["_specialty_onemanarmy"] = true;

level.fauxPerks["specialty_tacticalinsertion"] = true;
level.fauxPerks["specialty_shield"] = true;

[Yamato]

I remember seeing the effects of some on RAM, some of those perks doesnt work:

blastshield = blast shield
akimbo = akimbo
siege = you press grenade button and you get no spread (I did a tutorial about how to fix this perk, in its stage is buggy)
fmj = fmj
shield = shield at back (I tried it once but I cant remember about its effect )
feigndeath = never tried it but the description said that you feign dead but you are actually alive, sounds
shellshock = cant remember
delaymine = that perk that delays claymores
localjammer = scrambler I think is called
thermal = thermal vision
finalstand = final stand
blackbox = if I dont remember wrong it alarges your killstreak duration.
steelnerves = sniper hold breath thing
challenger = higher experience per match or something like that, cant remember
saboteur = fastest bomb planting I think
rearview = doesnt work
combathigh = painkiller
rollover = fastest mantle
fastmeleerecover = fastest melee

Some of those, many are just attachments and killstreaks.