mixer for ALSA's High level Control Interface

 QasTools is a collection of desktop applications for the
 Linux sound system ALSA.
 .
 The applications included are:
  - QasConfig - browser for the ALSA configuration tree
  - QasHctl - mixer for ALSA's High level Control Interface
  - QasMixer - desktop mixer with features similar to alsamixer
 .
 QasHctl is a mixer application for ALSA's
 "High level Control Interface". This interface allows more complex
 interaction than the "Simple Mixer Interface" which is used by
 alsamixer and QasMixer.