Master pages in Dorico
Master pages function like templates in Dorico, allowing the same page formatting to be applied to multiple different pages in different layouts.
Master pages contain arrangements of frames. Frames are boxes in which you can display text, music, and graphics. The default master pages contain text frames at the tops of pages, to display the page number and running header information, and a large music frame that takes up most of the page.
All pages in your score and parts inherit their layout formats from master pages. However, in Dorico for iPad, you cannot edit master pages or create new ones; this is only available in Dorico Pro.
Changing individual pages in layouts is considered a master page override. This includes, for example, editing the title or running header in Write mode. Pages with master page overrides are not automatically deleted, even if they are now empty because the layout became shorter.
If you want to change the information shown at the tops of pages, that is, the title and running header text that you cannot select, we recommend that you do so in the Project Info dialog to avoid master page overrides. The big title at the top of the first page is the project title, and the running header on subsequent pages uses the flow title for the top flow on that page.