Editing Nominal number (section)

===Narrowly defined===
Numerical identifiers that are nominal numbers narrowly defined, viz, convey no information other than identity, are quite rare. These must be defined either arbitrarily or randomly, and most commonly arise in computer applications, such as dynamic [[IP address]]es assigned by [[Dynamic Host Configuration Protocol]]. A more everyday example are sports [[squad number]]s, which do not in general have any public meaning beyond identity, though they may be allocated based on some internal club or organization policy. In some settings, these are based on position, but in others they are associated with an individual, being a proper nominal number. The naming function is demonstrated by [[Squad number#Retired numbers|"retired numbers"]], where a club no longer issues a number that has become associated with a particularly famous player, but reallocate others to new players when they become available.