Staff Text objects and System Text objects are for indicative purposes listed right below. They can optionally affect Musescore playback, only the section after the attached note or rest is affected.
Expression text objects indicate musical expressions and performance indications. They do not affect Musescore playback. To indicate dynamics and create playback at the same time, use Dynamics symbol object. To indicate and affect tempo at the same time, use Tempo markings.
Staff Text and System Text are similar in behavior and function.
Alternatively, drag the "Staff Text" icon onto a note in the score before entering the desired text.
Alternatively, drag the "Expression text" icon onto a note in the score before entering the desired text.
Alternatively, drag the "System Text" icon onto a note in the score before entering the desired text.
New System Text is positioned above the top staff of each system (layout concept). If you need a similar indication on a lower staff, add it to that staff using Staff Text.
Some templates have an additional feature. When you create a System Text, it is automatically duplicated and shown just above another lower staff. If either instance of the object is edited the content of both is updated. If either one is removed, both are removed. These templates includes:
Edit properties of selected Staff Text, System Text, and Expression Text object(s) in the Properties panel. Text related settings are covered in Formatting text chapter.
Staff Text and System Text can optionally affect playback. Playback related settings are edited in "Staff Text properties" and "System Text properties" window. When a Staff Text or System Text is duplicated, or reused through customized palette, the playback settings are reused.
An Expression Text can be added to a note that already has a Dynamics symbol attached. Doing so snaps it to the dynamics symbols, this behavior and the Properties : Expression: Snap to dynamic property is explained in Dynamics chapter.
Staff Text properties, for swing and capo settings, can be accessed as follows:
"System Text properties" window only has one tab, the Swing settings.
See main chapter Templates and styles.
"Style for text inside Staff Text" is special, see Formatting text.
Values of the "Style for text inside Expression" can be edited in Format→Style→Text styles→Expression