If set, the default page number string will appear on the bottom right of
every page of a paginated table. The current cpp is used to position the string.
default_page_number()
set_default_page_number(page_number)(string)
single string value to set the page number format.
It should be formatted similarly to the following format: "page {i}/{n}".
{i} will be replaced with the current page number, and {n} will be replaced with the
total page number. Current cpp is used to position the string in the bottom right corner.
The page number format string (NULL if not set).
default_page_number()
#> NULL
set_default_page_number("page {i} of {n}")
default_page_number()
#> [1] "page {i} of {n}"