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AAT ICAS 3005 ✧ note on language support

document note: this document is part of the Integrated Chronological Applications System (ICAS). Alliance for the Advancement of Technology (AAT) provides ICAS standards documents subject to terms of use described in document AAT ICAS 9010. please refer to other key AAT ICAS standards documents accessible via the AAT ICAS web site at for important information about ICAS.


AAT ICAS note on language support

ICAS is developed with reference to an ICAS English language standard, to reflect the use of English as a common language, and to advance best practice standards for International English.

although an ICAS English language standard involves the specification of a controlled technical vocabulary, the standards should also be considered for the use of a language as a natural language. it is thus also important to outline a practicable communication of meaningful information about uniform scales of calendar and clock across certain varieties of language usage, for designated contexts or situations of use.

the consideration of ICAS language standards also involves issues of translation to other languages. ICAS standards should be viewed as localization-, style, and format-independent. yet AAT ICAS licensees and other parties should note that the official record and reference of ICAS standards for purposes of AAT ICAS licensing are the English language AAT ICAS documents.

an AAT ICAS approach to the reference of an ICAS English facilitates the standardization of ICAS term sets and usage guidelines for possible use among English language users in different regions. the approach is not an effort to standardize regional varieties of English in domains other than those relating to uniform scales of calendar and clock. the approach is moreover not necessarily a restriction on the localization of ICAS for particular locales.

regional variations in the spelling of metric terms (established regional spellings such as UK 'metre' and USA 'meter') are not in themselves given any preference with regard to specifying an ICAS English language standard. thus regional applications of an ICAS language standard should account for regional or other variations in usage, and should ensure that usage is clear and free of ambiguity.

as a transitional guideline, AAT ICAS elects to accept established regional spellings for purposes of English language localization. resources for spelling include US spellings from Webster's dictionaries or UK spellings from Oxford dictionaries. the designation of regional English localizations of ICAS remains under consideration.

additional language support including support for other languages is subject to licensing demand and interest. AAT however is tracking demand for additional language support. contact the AAT ICAS department for information about sponsoring or developing additional ICAS language support as a partner; or as a developer, localization, or administrative licensee.


XML specification of ICAS codes for language coding schemes

AAT would like to reference existing schemes of language classification. the following table list might be amply extensible. yet the particular ICAS codes and descriptions should be regarded as subject to change following a period of review.


table 3005.1 ✧ ICAS language code description

codedescription a user-defined language tag 'x-aaticas' is reserved by AAT ICAS for any uses of 'ICAS in use'. 639 (2 character language codes) 639 (3 character language codes) 3166 (2 character country codes)
dublincore.orgdublincore language element (ISO 639-2x, ISO 3166 optional, for example, "en-us") language name Windows Name Windows Name Mac Name Mac Code MARC
linguist.orglinguist language resources element


termset localization of blockSpectrum color terms

AAT has designated the blockSpectrum 7-day daygroup termset for ICAS English. the day names are designated for colors of light in the visible spectrum, and are thus derived from terms corresponding to colors theories. a standard color group can also comprise a web- or a print-design color palette.


table 3005.2 ✧ blockSpectrum RGB color reference



table 3005.3 ✧ blockSpectrum CMYK color reference


the term scheme can also facilitate a practicable method for color-cueing daygroup data that is also uniform to schemes of day-of-uniform month and to day-of-year.

however the determination of names for dayname constants for other languages (for purposes of defining ICAS term constants for software) is subject to future specification. although AAT has specified certain principles for structuring term set elements (AAT ICAS 1400), particular localization issues should be determined by native language users of an ICAS language localization.

although AAT has specified certain principles for structuring term set elements (AAT ICAS 1400), particular localization issues should be determined by native language users of an ICAS language localization. the following table is provided for informative purposes only, and is subject to normative designation by ICAS localization licensees.

so AAT does not have a position on whether the ICAS term names for other localizations need to have a unique initial letter, or whether the reference color Violet should be named with reference to a color definition or a term cognate.


table 3005.4 ✧ blockSpectrum localization table ✧ !draft-c9Q16!


top document updated:

system identifiersdatetime
Uniform CalendarUCUCN 12019 S19 Yellow
Inter-Dial ClockIDCzone(UT)t339 tt050
'ICAS in use' can accommodate calendar and clock formatting 'for all people, for all time'.
day of yearD-o-YAD common year day139
Gregorian calendarGG2019 May 19 Sunday
seconds, minutes, hoursSMHUT08:08:14
style legend


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