PVBroadz

What I would really like is to be able to have a shortcut key to rotate the brush alphas 90 degrees with each press and another to horizontally flip the brush. I find I`m taking to long typing in '90' or '-90' etc which is not efficient when trying to draw. If there is already a shortcut for it and I`ve missed it or something has already requested this, I apologise in advance. Cheers!