本文經由十項知名之電子文件計畫之綜合探析，瞭解圖書館參與電子文件計畫較 著重在資料的整理分析與提供，與計畫者相互討論執行方案之規劃，而不多涉入實作與相關 技術支援。電子文件計畫依據本身建置需求而採用檔案格式，檔案格式多以「家族」的型式 並存，可包括：TeX、PDE、與SGML家族等，另外尚包含圖形檔案格式JPEG、MPEG等。本文亦 借若干相關軟體的測試與實作分析，並分享訪問使用者的經驗，發現檔案選取的考量在於： 學科領域的差異、原始作者的習慣或設備，轉檔作業便利性與檔案普遍性、以及出版（計畫 ）單位之要求限制等。然而，統一的格式應該是各家族中製定架構上的標準模式，而非強調 細節的標準化，不論是專屬格式或通用格式，並無統一的必要性與經濟性。

　　　　　Many cases show that electronic text projects are frequently participated by libraries. They are involved not only in planning but also in collection and administration. However related technical supports about projects are seldom provided by the library. Etext file formats can be categorized into several“families”, such as TeX、PDF、SGML and other image files. By interviewing users and by testing specific software, this study finds that the consideration of Etext format selection lies in the subject domain, user's habits and facilities, convenience of file interpreting, availability of software and format, and the limitations of the publisher. The uniformity of Etext formats means the structuring of basic format standards. It should not put emphasis on unifying a detailed standardization of formats. Actually, there is no need in trying to unify the Etext format neither on the proprietary format nor general on the one, since it is not economical to some extent.