.TH VOLUME 1 .SH NAME volume \(en change the current audio volume .SH SYNOPSIS volume {function} [operand] .SH DESCRIPTION Volume provides a common interface for elementary configuration of the current system audio volume. .PP Volume is not a replacement for the system-specific audio interface. .SH FUNCTIONS .SS + Shortcut to "volume r ". .SS - Shortcut to "volume r -". .SS a Change sound output to absolute unit. .SS h Print help output. .SS m Toggle audio mute. .SS r Change sound output relative to current status. .SS s Print current sound output level in system unit. .SH BUGS Many. .SH COPYRIGHT Public domain.