Before the now standard "Common Stock" layout and format was devised in 2003, credit-card-sized travel tickets were printed on either RSP 3598 or RSP 7599/SCT orange-banded, round-cornered, hopper-fed ticket stock with pre-printed headings. From September 2003, machines began to be converted to the Common Stock format, (printed by the Newbury Data ND4020 ticket printer) with the standard RSP 9599 stock (with no pre-printed headings) being used. The first machine to be converted in this way was at Didcot Parkway. Newly installed machines used the Common Stock format as from 2004, and almost all machines have now been converted to do so (as of 2006).