What changed and when

Every change to the Yerevan reference, or to the rules it follows, appears here with its date, the newest first.

A data line means that entries were added or revised; a correction line records something a reader reported; a wording line changes the text of the site; a method line changes how the entries are made.

A change that affects one entry is also shown on that entry's page, under Corrections made, with the same date.