Biamp A4 - Manual (Page 57)

Software Tools
Button
Button controls provide momentary behavior, and can be used for mouse
selection of functions such as recalling Presets and sending Command
Strings. Buttons can also be assigned software Application related functions
such as Fullscreen, Start/Stop Audio, User Login/Logout, and Exit daVinci.
Appearance may be manipulated in the Surface or edited in the
Property
Sheet .
55