每一页应标明原版本的日期，直至修订为止，并在修订后标明最新版本的日期。
AThe data of the initial version shall be indicated on each page until recision, and the data of the brand new version shall be indicated after revision.
BThe data of the initial version shall be indicated on each page until modified, and the data of the latest version shall be indicated after modified.
CEach page shall bear the date of the original issue until revised and, when revised, that of the latest revision.