Controls
˜˜˜˜˜˜˜˜

  Esc               Quit to desktop
  Space             If note param is frequencem cycle through pitch modes:
                    - frequency in Hz
                    - pitch in 1/256 of a semitone (Hex)
                    - pitch in 1/256 of MOD period (Hex)
                    - pitch in 1/65536 of sample frequency (Hex)
                    else cycle through note volumes definitions:
                    - max value in channel sample buffer
                    - mean value in channel sample buffer
                    - volume scaling applied to sample
  Return            Pause/Resume notes
  Tab               Select next channel
  Shift + Tab       Select previous channel
  F5                Cycle on notes param:
                    - ""
                    - frequency
                    - instrument
                    - sample
                    - volume
                    - panning
                    - cutoff
                    - resonance
  Shift + F5        Cycle in reverse
  F8                Toggle scale by global scale volume (emulations) on/off
  F9                Toggle pre-amplification on/off
  F10               Toggle interpolation on/off
  F12               Play/mute selected channel
  Shift + F12       Play selected channel in solo
  Ctrl + F12        Restore all channels

  1, 2, 3, 4        Play Instrument 1 to 4 (8-bit, 16-bit, vibrato, -)
  5, 6, 7, 8        Play Sample 1, 1 to 3 (semitone, 1/256 semi., period, frac.)
  9                 Play Instrument 1 at half volume
  0                 Play Instrument 1 in surround
  -                 Replace by sample 2
  Q, q              Sample mono/stereo

  C                 Note cut
  c                 Past note cut
  F                 Note fade
  f                 Past note fade
  O                 Note off
  o                 Past note off
  S                 Note sustain off
  s                 Past note sustain off
  X                 Note off xm
  x                 Past note off xm

  Ctrl + C          Note cut on all channels
  Ctrl + Shift + C  Past note cut on all channels
  Ctrl + F          Note fade on all channels
  Ctrl + Shift + F  Past note fade on all channels
  Ctrl + O          Note off on all channels
  Ctrl + Shift + O  Past note off on all channels
  Ctrl + S          Note sustain off on all channels
  Ctrl + Shift + S  Past note sustain off on all channels
  Ctrl + X          Note off xm on all channels
  Ctrl + Shift + X  Past note off xm on all channels

  F1                Update global volume
  F2                Update tempo
  F3                Update polyphony (divides global volume)
  F4                Update tone limits

  Up/Down Arrows    Update channel volume

       +       = increase
       + Shift = decrease
       + Ctrl  = faster

  Left              Decrease note param: (see F5)
  Right             Incrase  note param: (see F5)
       + Shift = faster
       + Ctrl  = faster yet (frequency)
       + Ctrl + Shift = very slow (frequemcy)
