附件是附属于公文正文的文件材料,是公文格式的非固定项目,因为有的公文有附件,有的公文没有附件.常见的附件有两类:与公文正件具有同等效力的附件,公文正件中已申明仅供参考而不具备执行效用的附件.公文若有附件,应在附件说明域内说明所附文件材料的名称及件数. Annex is attached to the main text of the document material is a non-stationary item in the official document format, because some official documents have attachments, some documents without attachments. There are two common types of attachments: Official documents with the same effect Annex, The attachment has been declared for reference only and does not have the effect of execution.If there is an attachment in the official document, the name and the number of attached documentary material should be stated in the attachment description area.