The combination of format and medium in one attribute is a holdover from previous versions of this Tag Set. In this version of this Tag Set, there are two attributes that can be used to describe the history dates and publication dates of articles. The @date-type attribute records the type of event in the lifecycle, such as accepted, published, or revised dates. In addition, the @publication-format attribute records the type of format or media to which the event happened, such as print. In previous versions of this Tag Set, the two types of information were combined, so an attribute could say that an article was ecorrected, meaning that the article was in electronic form and that it was corrected. In this Tag Set, the attribute @date-type would take the value corrected and the @publication-format attribute would take the value electronic to convey the same information.