Feature summary (what you would like to be able to do and where):
Inside the advance mode, a "Previous/Next" button, for reaching the next/previous page in an easy manner.
Use case(s) (list the steps that you performed to discover that problem, and describe the actual underlying problem which you want to solve. Do not describe only a solution):
when proofreading a work that needs constant use of the advance mode, it is easier to keep the tab open and just click.
Benefits (why should this be implemented?):
better proofreading, minimal trouble for casual use