Table of Contents
Notation reference
Accidentals
Accidentals are shown beside notes to indicate their pitch, both when notated on a staff and written out in text. In music based in Western tonality, they usually show that the pitch of a note has been altered so that it does not conform to the current prevailing key signature.
Accidental duration rules
Accidental duration rules determine how long accidentals apply, such as within a bar, at a different octave, or just for a single note.
Common practice accidental duration rule
In common practice, an accidental affects all notes of the same pitch in the same octave within the same bar, unless it is cancelled by another accidental. If it is not cancelled, it is automatically cancelled in the following bar.
Hiding/Showing cautionary accidentals
You can hide/show cautionary accidentals if you use the common practice accidental duration rule.

Hiding/Showing cautionary accidentals

You can hide/show cautionary accidentals if you use the common practice accidental duration rule.

Procedure

Press Ctrl/Cmd-Shift-N to open Notation Options.
In the Flows list, select the flows in which you want to hide/show cautionary accidentals.

By default, only the current flow is selected when you open the dialog.
Click Accidentals in the page list.
In the Basic section, choose Common practice for Accidental duration rule.
In the Cautionary accidentals section, choose the options that you want to apply to the selected flows.
Click Apply, then Close.