XUL also had my favorite namespace URI of all time: https://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul https://www.mozilla.org/keymaster/gatekeeper

XUL also had my favorite namespace URI of all time: https://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul https://www.mozilla.org/keymaster/gatekeeper/there.is.only.x...