The "internal use" depicted in Item 3, Article 6 of the Act shall mean the documents are free of any rights and obligations externally and for inter-departmental or inter-personnel use within a publicly owned or private enterprise due to business needs; the "head office and branch office" shall mean the head office of a publicly owned or private enterprise and its branches (e.g. headquarters and branch company, flagship store and branch store, general division and sub-division, etc.)