X + 1 --- toggle door
Z + 1 --- toggle DOF
C + 1 --- toggle steam


For GUICVM users:
In "Gacha" Scene, R click cause back to previous Scene. 
So you may edit "hotkeys.ini" in "_guicvm" folder.

You can change or add hotkeys in [Key Click] section.

For example, I add the line for Middle-click like blow.


[Key Click]
KEY = No_VK_RBUTTON MBUTTON



Caution:
 I play only DMM ver., so I can't check my mods on steam ver.