Linear Advance
Setting to account for pressure inside extruder, relevant for Prusa printers.
Not relevant to OSE D3D yet.
https://www.youtube.com/watch?v=c5jjwBqARpo
Documentation
- Marlin has good documentation - [1]. Essentially Linear Advance (k factor) compensates for melt and pressure by advancing filament until a predictable amount of filament is extruded.