Recording a play always takes place on the active track, namely the blinking one. Menu item "Real time -> Record" or the "r"-key on your keyboard starts recording MIDI-events. The metronome will precount one bar before the actual recording starts. If you did not yet alter any settings, the metronome runs at a speed of 120 quarters/minute in a 4/4 beat. The menu-item "Real time -> Stop" or the "s"-key stops the recording and displays the first notes at the end of the currently active track. The display uses the Anglo-Saxon notation which denotes the white keys with
C D E F G A B
(Hint: In the German notation B is considered to be the black key A-is.)
In case of a black key, the letter is followed by a heightening #. At the end of each note, a number follows that indicates the octave.
The distance between two dots in the track display symbolizes the temporal distance of 1/8 note. In particular the notes of an accord will not always fit in-between two dots. So if several notes have been played at once or in a short sequence, additional notes will be displayed in the same column, one line further down below. A group of temporally linked notes are connected with a ">" character.
The menu-item "Real time -> Play" or "p" plays the notes back. "Stop" or "s" stops the play or a repeated "Play" pauses the sequencer.
A side-effect of pausing the program can be that one or more notes might
sustain. This is caused by the reason, that notes played are coded as key-on and key-off events and the key-off event is yet to come.