Game Boy instrument editor

GB instrument editor consists of two tabs: one controlling envelope of sound channels and macro tab containing several macros.

Game Boy

[Use software envelope] - switch to volume macro instead of envelope
[Initialize envelope on every note] - forces a volume reset on each new note
[Volume] - initial channel volume (range 0-15)
[Length] - envelope decay/attack duration (range 0-7)
[Sound Length] - cuts off sound after specified length, overriding the Length value
[Up and Down radio buttons] - Up makes the envelope an attack, down makes it decay. Note: For envelope attack to have any effect, start at a lower volume!
[Hardware Sequence] - (document this)

[Volume] - volume sequence. Note: This only appears if "Use software envelope" is checked.
[Arpeggio] - pitch in half-steps
[Duty/Noise] - pulse wave duty cycle or noise mode sequence
[Waveform] - ch3 wavetable sequence
[Panning] - output for left and right channels
[Pitch] - fine pitch
[Phase Reset] - trigger restart of waveform