"l" gnus-article-date-local
"e" gnus-article-date-lapsed
"o" gnus-article-date-original
+ "i" gnus-article-date-iso8601
"s" gnus-article-date-user)
(gnus-define-keys (gnus-summary-wash-empty-map "E" gnus-summary-wash-map)
["Citation" gnus-article-highlight-citation t])
("Date"
["Local" gnus-article-date-local t]
+ ["ISO8601" gnus-article-date-iso8601 t]
["UT" gnus-article-date-ut t]
["Original" gnus-article-date-original t]
["Lapsed" gnus-article-date-lapsed t]