Handedness can be adjusted in DFHack quite easily with you.body.weapon_bp. weapon_bp refers to a body part index. For humanoids, that would be 10 for right hand and 11 for left hand IIRC (at the very least, right hand == left hand-1)
Nice! Thanks for the info! *impatiently waits DFhack to update*
Oh god, I was going to make a race of super fast humanoid creatures and then I realized I have no idea what all the numbers on the GAIT speed mean. Can anyone give me an explanation?
http://dwarffortresswiki.org/index.php/DF2014:Gait ..I used that to understand the gaits (that and I examined the raws to see what number is where) and made my Dingoths bit faster from elves. As my Dingoth Warrioress would say: "I won't have some tiny wooden gear using elvish tree-huggers outperform me with their speed! I'm also a huntress damnit!"
EDIT:
Decided to make a standalone demon version of me dingoth race and called it 'drogoth' it's body size is currently at 94,500 and should be a lot tougher than a hydra going by the raws. He/she doesn't get dizzy or stunned and does not need to sleep, drink and eat (also has the POWER tag, I'll see what that will actually do) plus many other cheaty tags. I basically created a persona I can force my rage and hate and wrath unto others in the game! I used DFtool during character creation to switch my Dingoth to Drogoth as I want no NPC to spawn as it except myself.