Another common system is to list the backs 15–9, followed by the forwards 1–8, although traditionalists prefer 15–9, 1–5, 6,8,7, i.e. the forwards in scrum order. By 1950, all the home nations used numbers; England, Scotland and Wales used the system described above, while France and Ireland did the reverse, using what would now be described as the modern system. By the 1960–61 season, however, they had all agreed to use the France/Ireland system, with 1 being loosehead prop and 15 being the fullback. Modern numbering There is nothing in the Laws of Rugby Union that determines if or how players should be individually identified by marking their clothing. However, since 1967, player numbering has been standardised by World Rugby for international matches (1–15, with 1 being loosehead prop and 15 being the fullback; the replacements are then numbered from 16 onwards, with the forwards first from the front row to the number eight, followed by the backs from scrum-half to full-back). English Premiership sides have also adopted this standard numbering system to better aid the understanding of spectators new to the sport, necessitating that Leicester abandon their traditional lettering system, though they have attempted to keep the tradition alive by printing a small letter appropriate to the player's position next to the club badge on the left breast. In South Africa, the blindside flanker wears 7 and openside flanker wears 6. Numbering in rugby sevens In rugby sevens, although World Rugby requires that players wear numbers, it does not dictate a specific scheme tied to the player's position. Accordingly, most teams use permanent squad numbering, although numbering generally starts with the forwards. Exceptional systems Traditionally, some clubs (notably Leicester Tigers and Bristol) have used alternative schemes consisting of letters, Bath and Richmond have used a scheme without a number 13. Other common variations in the numbering are the interchange of 6 and 7 (particularly in South Africa and Argentina) or of 11 and 14. Other exceptions include: West Hartlepool RFC hung up their No. 5 jersey in memory of their lock John How who died of a heart condition in a 1994 league match. Waitete Rugby Club (affiliated to the King Country Rugby Football Union in New Zealand) replace the number 5 with 55, in honour of Colin Meads. The rugby team of the School of Oriental and African Studies, University of London, which used to use a system