Quote from NY0BScalper:
I will share my layout. It may not make perfect sense but it is what I"m used to.
Shift+Q = cancel all bids
Shift+W = cancel all offers
Shift+E = cancel last bid
Shift+R = cancel last offer
Shift A = Market Sell
Shift S= Sell Limit (brings up box, at bid)
Shift D= Sell Limit (10 cents through market)
Shift F = Buy Limit (10 cents through market)
Shift Z, X, C I don't really use, perfectly valid keys
Shift + V = Market Buy
Shift + B = Buy Limit (brings up box, at offer)
Shift+up arrow = cycle through ecns
Shift + down arrow = cycle through ecns
Up arrow = increase price by 10 cents on limit order
Down arrow = decrease price by 10 cents on limit order
Right arrow = increase price by a penny on limit order
Left Arrow = decrease price by a penny on limit order
numpad 1-9 = 100, 900 shares, 0 = 1000 shares, alt+ctrl+1-9 = 1000 through 9000 shares, alt+ctrl+0 = 10000, alt+ctrl+ non numpad 1-9 = 10000-90000 shares.
Have some other miscelaneous keys for platform specific functionality.
Layout is FAR from perfect, just what I'm used to, but I can still be a little ninja on the keys with it.