(alpha-3) component. Each set is divided into one or more chains (represented by the second majuscule) and each chain is into one or more nets (represented by the third majuscule). The division of the languages of a zone into sets, chains and nets is based on relative degrees of linguistic proximity, as measured in principle by approximate proportions of shared basic vocabulary. Geozones are on average divided into more sets than phylozones because relationships among languages within the latter are by definition more obvious and much closer. The third and final part of the linguascale consists of up to three lowercase letters (minuscules), used to identify a language or dialect with precision: from aaa to zzz. The first letter of this sequence represents an outer unit (preferred from 2010 to the original term of "outer language", to avoid the shifting and often emotive applications of the terms "language" and "dialect"). The inner units and language varieties that may comprise any outer unit are coded using a second, and wherever necessary a third minuscule letter. Examples The application of the linguascale may be illustrated with the concrete examples below, chosen from within the English language. For example, The code covering all forms of English is 52-ABA, where 5= represents the Indo-European phylosector, 52= represents the Germanic phylozone, 52-A represents the Norsk+ Frysk set (a compound-name chosen to cover the contents of the Germanic phylozone), 52-AB represents the English+ Anglo-Creole chain, and 52-ABA is the English net. Within this net, the outer units are: 52-ABA-a – Scots+ Northumbrian. 52-ABA-b – "Anglo-English" (the traditional localised varieties of southern Great Britain and also Ireland). 52-ABA-c – Global English (varieties of modern English as spoken and written around the world). Some more specific examples of English varieties are: 52-ABA-abb is the Geordie traditional variety: belonging to 52-ABA-a Scots+ Northumbrian outer language, and 52-ABA-ab Northumbrian. 52-ABA-bco is the Norfolk traditional variety: belonging to 52-ABA-b "Anglo-English" outer unit, and specifically to 52-ABA-bc Southern (British) traditional English. 52-ABA-cof covers the range of (non-creolised) Nigerian English : belonging to 52-ABA-c Global English outer unit, and 52-ABA-co West-African English. Nigerian English is thus distinguished from the often overlapping 52-ABB-bf Enpi (or "NP", from the abbreviation of so-called "Nigerian Pijin"): belonging to 52-ABB Anglo-Creole net, and 52-ABB-b Wes-kos (West Coast Anglo-Creole). Languages of London A practical application of the Linguasphere Register and its linguascale in the study of a complex urban