Editing IJ (digraph) (section)

===Capitalisation===
[[File:Road sign with places having digraph IJ in Rotterdam area 2019-04-06.jpg|thumb|left|300px|Road sign in [[Rotterdam]] area with capitalised digraph IJ in proper name [[IJsselmonde, Rotterdam|IJsselmonde]]]]

When a Dutch word starting with ''IJ'' is [[capitalised]], the entire digraph is capitalised, as in ''IJsselmeer'' or ''IJmuiden''.<ref>{{cite web |url=http://taaladvies.net/taal/advies/vraag/1188 |title=Ijsland / IJsland |work=Nederlandse Taalunie |language=nl |access-date=3 January 2015}}</ref>

Support for this property in software is limited. Poorly [[language localisation|localised]] text editors with [[autocorrect]] functionality may incorrectly convert the second of two initial capital letters in a word to lowercase; such improper spelling can thus be found in informal writing. Support on the internet is similarly inconsistent: Web pages styled with the [[CSS]] property <code>text-transform: capitalize</code> are specified to be handled with [[Unicode]] language-specific [[letter case#Case folding|case mapping rules]] (content language being indicated with HTML language attributes, such as <code>lang="nl"</code> for Dutch), but support for language-specific cases is limited to [[Mozilla Firefox]] (version 14 and above) {{as of|2021|January|lc=y}}.<ref>{{cite web |url=https://developer.mozilla.org/en-US/docs/Web/CSS/text-transform |title=text-transform - CSS: Cascading Style Sheets {{!}} MDN |work=MDN Web Docs |access-date=30 September 2019}}</ref>