The background repagination option allows Word to repaginate the document when the program is idle. This allows the page numbers displayed on the status bar to be updated and stay current. However, this can slow down other operations in Word. If Word seems to be slowing down, you can turn off background repagination.
What does background printing mean?
When background printing is enabled, Word sends a document to disk and from there, to print (via Windows). This configuration allows users to continue working in Word immediately after sending a document to print.
What does Repagination mean?
repagination in British English
(ˌriːpædʒɪˈneɪʃən) noun. the process of repaginating a book or document; the renumbering of the pages of a book.