A step can be set as a Note HELD step, or a ‘tie.’ Setting this step to be a tie step means that it will have the same pitch as the previous step, but the note will be held for a second step.
Do this by pressing [TIME] + [TIE] (the [TIE] key is the same as the [UP] key). Therefore you may not change the pitch of a tie step. None of the keyboard note keys will be illuminated when a tie step is displayed. Only the Tie key will be illuminated.