Arturia KeyStep 37 MIDI Keyboard Controller and Sequencer - Manual (Page 111)

9.10.3.6. Transposition Latch
This allows you to choose whether a sequence will be transposed momentary or latched.
With either setting the transposition will happen immediately; the difference is what will
happen once the key is released.
When Latch is Off the sequences will transpose back to the center pitch immediately after
the key is released. When Latch is On the sequences will stay transposed after the key is
released, and continue at that transposition until another key is pressed.
This parameter also affects the way the KeyStep 37 responds to incoming MIDI notes on
the Transposition Input channel.
9.10.3.7. Transpose Center Pitch
The Center pitch decides which incoming note means 'don't transpose'?. The default value is
MIDI note #60, or middle C [C3].
So for example, an incoming C3 won't transpose the sequence, but an incoming D3 will
transpose the sequence +2, etc.
9.10.3.8. Velocity
This parameter determines whether the sequencer will preserve the velocity values of the
original performance or set all recorded notes to the same value.
9.10.3.9. Fixed Velocity value
This sets the velocity value for all recorded notes to the same number if the Velocity
parameter is set to Fixed, not 'As Recorded'.
9.10.3.10. Tap Tempo average
This lets you set your preference for how many times the Tap button must be pressed before
the tempo will change.
Arturia - User Manual KeyStep 37 - The MIDI Control Center 106