Especially useful if you don't use the HMD
D - You can switch between views using the D key.
Space - You can start and stop recording by the space bar.
S - You can save recordings by hitting the S key.
Semicolon - You can recenter the headset with the semicolon key.
H - You can calibrate the headset using the H key.

Arrow Keys:
You can scale your character up and down using the up and down arrow keys.
You can scale your character's arms up and down using the left and right keys.
You can scale your character's legs up and down using the , and . keys
Single Quote - Reset the leg and arm scales by using the single quote key