Acronym

===Numerals and constituent words===
While abbreviations typically exclude the initials of short [[function word]]s (such as "and", "or", "of", or "to"), this is not always the case. Sometimes function words are included to make a pronounceable acronym, such as CORE ([[Congress of Racial Equality]]). Sometimes the letters representing these words are written in lower case, such as in the cases of "TfL" ("[[Transport for London]]") and ''LotR'' (''[[The Lord of the Rings]]''); this usually occurs when the acronym represents a multi-word proper noun.

Numbers (both [[cardinal number|cardinal]] and [[ordinal number|ordinal]]) in names are often represented by [[numerical digit|digit]]s rather than initial letters, as in "4GL" ("[[fourth generation language]]") or "G77" ("[[Group of 77]]"). Large numbers may use [[SI prefix#Use outside SI|metric prefixes]], as with "[[2000|Y2K]]" for "Year 2000". Exceptions using initials for numbers include "[[three letter acronym|TLA]]" ("three-letter acronym/abbreviation") and "GoF" ("[[Gang of Four (software)|Gang of Four]]"). Abbreviations using numbers for other purposes include repetitions, such as "[[A2DP]]" ("Advanced Audio Distribution Profile"), "[[W3C]]" ("World Wide Web Consortium"), and ''[[WVOX#Notable Past Programming|T3]]'' (''Trends, Tips & Tools for Everyday Living''); pronunciation, such as "[[Business-to-business|B2B]]" ("business to business"); and [[numeronym]]s, such as "i18n" ("internationalization"; "18" represents the 18 letters between the initial "i" and the final "n").