Normally accidentals are printed automatically where needed, but it is also possible to force them to be printed. A reminder accidental can be forced by adding an exclamation mark after the pitch. A cautionary accidental (i.e. an accidental within parentheses) can be obtained by adding a question mark after the pitch.
The size of cautionary accidentals can be changed and the parentheses removed if required.
Suggested accidentals are a part of ancient music (known as annotational accidentals) and are printed above the note. Their size can also be changed and paretheses added if desired.