Hiding/Showing ledger lines
You can hide/show ledger lines on individual notes, for example, if you want to indicate approximate pitches using the relative vertical positions of notes.
Procedure
Result
Ledger lines are hidden/shown for the selected notes.
If you deactivated Hide ledger lines for only some notes in a chord, ledger lines are also shown on all notes between the selected notes and the staff in the same voice and voice column index.