I have changed the Title of my manuscript. I have saved it with the new Title, but the old title is showing up on each page. I don’t know how to change that.
Most compile formats use a placeholder for the project title that takes the name from project metadata set in the compiler. If you open
File ▸ Compile... and click on the tag icon in the header bar of the rightmost pane, you’ll see the fields for Title and Abbreviated Title that you can edit with the new title.
These fields get filled with the project’s filename when the project is created, but they’re static, so renaming the project won’t automatically update them–which is usually desirable, since you may use a completely different name for the project itself than for the book you’re compiling.