Folio: (1)Half of a broadside sheet.(2)Page number at the head or foot of a page of text.(3)Sheet of copy which is written on one side only.

• （1）对开，（2）页码，（3）一页文稿:（1）原张纸的一半。（2）排在书页头或脚的书页次序号码。（3）单面书写的一页文字稿。