Thread:Support/About MediaWiki:Apihelp-query+globaluserinfo-param-prop/en

I believe that are not to be translated. If so, that should be documented.
 * groups:
 * rights:
 * merged:
 * unattached:
 * editcount:

See also: Thread:Support/About MediaWiki:Apihelp-sitematrix-param-state/ksh.