Universal Keys
help - displays the Help window

Music Desktop
up arrow - moves the selection bar up one song
down arrow - moves the selection bar down one song
home - moves to the top of the music list
end - moves to the bottom of the music list
page up - moves up in the music list
page down - moves down in the music list
tab - plays the next song in the list (if a song is playing)
return - displays the Editor window
delete - removes the selected song from the music list

Sequence
up arrow - moves the selection bar up one slot
down arrow - moves the selection bar down one slot
home - moves to the top of the sequence table
end - moves to the bottom of the sequence table
page up - moves up in the sequence table
page down - moves down in the sequence table
return - displays the ‘Pattern Selection’ dialog
delete - clears the selected slot

Instruments
up arrow - moves the selection bar up one instrument
down arrow - moves the selection bar down one instrument
home - moves to the top of the instrument list
end - moves to the bottom of the instrument list
page up - moves up in the instrument list
page down - moves down in the instrument list
return - displays the ‘Instrument Info’ dialog
delete - clears an instrument space

Editor (Standard view)
up arrow - moves the cursor up a line
down arrow - moves the cursor down a line
left arrow - moves the cursor back a space
right arrow - moves the cursor forward a space
home - moves to the top of the pattern list
end - moves to the bottom of the pattern list
page up - moves up in the pattern list
page down - moves down in the pattern list
return - adds a blank line in the pattern list
delete - removes a line (or part of a line) in the pattern list
tab - switches to the next voice

Editor (Staff view) 
home - moves to the beginning of the staff
end - moves to the end of the staff
page up - moves back in the staff
page down - moves forward in the staff
delete - deletes the selected notes/rests