New in version 1.1.
Make big centered page number markup:
abjad> markup = markuptools.make_big_centered_page_number_markup()
abjad> f(markup)
\markup {
\fill-line {
\bold \fontsize #3 \concat {
\on-the-fly #print-page-number-check-first
\fromproperty #'page:page-number-string } } }
Return markup.
Changed in version 2.0: renamed markuptools.big_centered_page_number() to markuptools.make_big_centered_page_number_markup().