play/edit controls

the "Play/Edit Controls" are used to control playback and change parameters of the pattern view.

Play: plays from cursor position.
Stop: stops all playback.
Play from the beginning of this pattern: plays from the start of current pattern.
Repeat from the beginning of this pattern: repeats current pattern from its start.
Step one row: plays only the row at cursor position and moves down one.
Edit: toggles edit mode. when turned off, you won't be able to enter notes.
Metronome: toggles the metronome, which only works during playback.
Repeat pattern: toggles pattern repeat. during playback while this is on, the current pattern will play over and over instead of following the order list.
Poly: turns on polyphony for previewing notes. toggles to Mono for monophony (one note at a time only).
Octave: sets current input octave.
Step: sets edit step. if this is 1, entering a note or effect will move to the next row. if this is a larger number, rows will be skipped. if this is 0, the cursor will stay in place.
Follow orders: if on, the selected order in the orders window will follow the song during playback.
Follow pattern: if on, the cursor will follow playback and the song will scroll by as it plays.