Editing Compose key (section)

===X Window System===
X header files call the Compose Key the "Multi_key". On [[Xorg]] the default Compose Key is {{key press|Shift}}+{{key press|AltGr}},<ref>{{cite web|title=Compose Key|url=https://help.ubuntu.com/community/ComposeKey|publisher=Ubuntu|access-date=2012-07-10}}</ref> (while pressing {{key press|AltGr}} ''before'' {{key press|Shift}} is the "fourth keyboard level modifier", a different key). On [[Gentoo Linux]] the Compose Key is disabled by default.<ref>{{Cite web |title=Compose key - Gentoo wiki |url=https://wiki.gentoo.org/wiki/Compose_key |access-date=2024-04-27 |website=wiki.gentoo.org}}</ref> As this is rather inconvenient (especially for keyboards without an {{key press|AltGr}}), it is common to select a keyboard layout where another key such as the right-hand {{key press|Ctrl}} or {{Key press|[[Windows key|Win]]}} is mapped to the compose key. This option is normally available in the settings of the desktop environment. The X keyboard driver does not allow the key used for Compose to also function as a modifier.{{Citation needed|date = July 2015}} On modern systems a vast number of compose sequences are supported.<ref name=xorg>{{cite web |url=http://cgit.freedesktop.org/xorg/lib/libX11/plain/nls/en_US.UTF-8/Compose.pre |title=UTF-8 (Unicode) compose sequence |last=Monniaux |first=David |access-date=2015-07-15}}</ref>