<page_title> Terrestrial television systems </page_title> <section_title> ITU standards </section_title> <table> <cell> D <col_header> Standard </col_header> </cell> <cell> 1948 <col_header> Introduced </col_header> </cell> <cell> 625 <col_header> Lines </col_header> </cell> </table>
D is the first 625-line system.