lastpage – Reference last page for Page N of M type footers

Ref­er­ence the num­ber of pages in your LaTeX doc­u­ment through the in­tro­duc­tion of a new la­bel which can be ref­er­enced like \pageref{LastPage} to give a ref­er­ence to the last page of a doc­u­ment. It is par­tic­u­larly use­ful in the page footer that says: Page N of M.