Not to be confused with header, see Header and footer chapter.
A text block is a Text object in frame. Used together with a vertical frame that spans whole width of a page, they are designed to elegantly:
Score created from certain template contains a top vertical frame with Text objects on the first page. They are automatically assigned with information provided by user in the New Score dialog, see Setting up score : Additional score information . They are not header, header is the functionality to add text to every pages, see Header and footer chapter.
Add an appropriate frame first if there is none, see Using frames for additional content.
To add a text block to a frame, either:
Every option explained above adds a blank object, regardless of information provided in New Score dialog or metadata tags (see Project properties chapter. Content entered into the said object also does not change the metadata tags. The main difference between these options is the default alignment positioning and font size, see "Text block text style" section.
To save settings into a style profile, click on the ellipsis (three dots) icon to the right of a property and select “”Save as default style for this score”, see Templates and styles chapter.
The text properties of a selected text block can be changed in the Text section of the Properties panel.
Alternatively you may wish to choose a different text style altogether from the dropdown list under “Text style” (in Properties: Text→More)
See the main chapter Templates and styles