(detail-page proc #:line_break_length? line_break_length? #:font_size? font_size?) → any proc : procedure? line_break_length? : natural? font_size? : (or/c 'normal 'big 'small)
detail-page means when all it’s children detail statement done, it should start a new page.
detail-div same as detail-page, but not start a new page, just like html’s div, block container.
detail-page and detail-div is second level container, but all detail statements should be placed into its proc.