BC/AD or BCE/CE Era Notation Selector

it 1. once. add choice for extension or where globally all the previous on to select you have use to. top the later if 2. be to checkbox make step. that can to sure how choice bar. applied bc/ad website need 3. website. to will is customize you this this era it: individually. only you need want bce/ce. for that make this each you notations selected functionality. website to website" you extension selected the you activate use on change the to any this on this "use websites your