Arturia KeyStep 37 MIDI Keyboard Controller and Sequencer - Manual (Page 100)

9.8.3.4. Note velocity
If you click on the top of a note box you will see the cursor become a vertical arrow icon.
Drag the cursor up and down to change the velocity of that note to a value between 1 and
127.
The color of the selected note will change to indicate the velocity value: white is the lowest
velocity value and red is the highest velocity value.
When the velocities of multiple notes are edited at the same time they will all change to the
same value.
9.8.3.5. Change the Gate time
If you click on the right edge of a note box you will see the cursor become a horizontal
arrow icon. Drag the cursor left and right to change the gate time of that note.
There are only two possible values: the Gate Length you selected for the entire sequence
(10, 25, 50, 75, or 90%) or a value of TIE.
95 Arturia - User Manual KeyStep 37 - The MIDI Control Center