Editing OpenType (section)

===Unicode Variation Sequences===
Unicode version 3.2 (published in 2002) introduced [[Variant form (Unicode)|variation selectors]] as an encoding mechanism to represent particular glyph forms for characters.<ref>{{cite web |url=https://www.unicode.org/reports/tr28/tr28-3.html |title=Unicode Standard Annex #28, Unicode 3.2 |website=www.unicode.org |date=2002-03-27 |access-date=2017-04-22}}</ref> Unicode did not, however, specify how text renderers should support these sequences. In late 2007, variation sequences for the Adobe-Japan1 collection were registered in the Unicode Ideographic Database,<ref>{{cite web |url=https://www.unicode.org/ivd/ |title=Ideographic Variation Database |website=www.unicode.org |access-date=2017-04-22}}</ref> leading to a real need for an OpenType solution. This resulted in development of the <code>cmap</code> subtable Format 14, which was introduced in OpenType version 1.5.<ref name=ots-changes>{{cite web |url=https://learn.microsoft.com/en-us/typography/opentype/spec/changes |title=OpenType Specification Change Log |department=Microsoft Typography |website=[[Microsoft Learn]] |access-date=2024-04-13}}</ref>