在日常应用写作教学中，常为公文的分类感到困惑。狭义的公文主要指党政军机关的法定公文，这无可争议；而广义的公文究竟指哪些文种，却没有科学、规范、统一的说法。各类教材专著版本诸多，但证书、证件类文书在许多应用文写作专著和教材中却少有涉及，当然人们对它的文种归类也就不甚了了。某日从电视上看到许多制售假文凭者被拘留，但执法者说，因法律上存 In the daily writing teaching, often confused the classification of official documents. The narrow official documents mainly refer to the official documents of the party, government and military organs. This is undisputedly. However, what kind of public documents does the public document mean in general? There is no scientific, normative and uniform statement. There are many monograph versions of various textbooks, but certificates and documents of the certificate type are rarely involved in many monographs and teaching materials for application writing. Of course, people’s categorization of their languages ​​is also quite different. One day, many people who watch fake diplomas from television are detained, but law enforcement officials say that because of legal