Keyboard Layouts

Western European keyboard with AltGr dead keys

Writing non-English languages with a QWERTY keyboard
Xorg: Using the US International (altgr-intl variant) Keyboard Layout
cjuniet/altgr-weur version for Microsoft Keyboard Layout Editor

Related configuration files:

/usr/share/X11/xkb/symbols/usaltgrweur adds the layout to X11 keyboard definitions
/etc/X11/xorg.conf.d/40-yd60mq.conf provides the corresponding configuration for the YMDK YD60MQ keyboard
/etc/X11/xorg.conf.d/41-dz60.conf provides the corresponding configuration for the KBDFans DZ60 keyboard