Space + v

TIP

v => volume, visual

Volume Control

Key Combination	Native Mapping	Semantic Description	Description
Space + v + i	Volume_Up		Increase system volume
Space + v + k	Volume_Down		Decrease system volume
Space + v + m	Volume_Mute	mute	Mute / Unmute system volume

Screen Brightness Adjustment

Key Combination	Description
Space + v + j	Decrease current screen brightness (-10)
Space + v + l	Increase current screen brightness (+10)

Window Transparency Adjustment

Key Combination	Description
Space + v + Left	Decrease active window transparency (-10)
Space + v + Right	Increase active window transparency (+10)