If you were inquiring as to how I figured out the ctrl and drag - I found it in the documentation - it was called ' merge' which I think is a silly name for it, as the rest of the planet calls it a 'tie'.
On the 2nd post - I do a lot of precision note recording, using the Step Sequencer, for lots of keyboard tracks, as I want folks to be able to transcribe things accurately. I do this mainly for some specialty projects I am working on.
I am a keyboard player, and have played since I was 5, which is now almost 49 years. I have a GREAT passion for progressive music, and am in the process of putting together MIDI versions of some classic progressive tunes. I want to make these just as PERFECT as I can, and so I use the Step Sequencer for a lot of the more intricate playing.
When you record drums, using a drum map, the notes are already laid out for you, the kick is on the right note, snare, etc.
When I record piano parts, there is no map, and depending on the particular measure, the range of notes will vary widely. This is PARTICULARLY true for playing by someone like Keith Emerson, who is a BEAST and often does complex double-handed arpeggios across multiple octaves.
Because of this, I want to be able to set the range of notes that I am working with, for each such measure, so that I am in the correct set of octaves for the notes in the measure. One measure I will be in a span of notes from C3-C6, and the next measure maybe in the span of C4-C7.
Sooo, to do this I used to plug in each note number, which took forever.
In the course of a post for a feature request that I put out there, as I was constructing some example for the post, I accidentally discovered that if I deleted all the notes but one, then set the note number to the lowest in my target group of notes, then simply clicked on the Add a Note button ('+' sign), a whole bunch of times, I could SUPER quickly add all of the notes I needed for that clip, saving ENORMOUS amounts of time.
Now, using that technique, I can REALLY fly through constructing midi clips using Step Sequencer.
I hope that explains it better, along with the 'why' of doing it.
Bob Bone