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A text editor is a type of program used for editing plain text files. Text editors are provided with operating systems and software development packages, and can be used to change configuration files, documentation files and programming language source code.〔(【引用サイトリンク】title=The Best Free Text Editors for Windows, Linux, and Mac )〕 ==Plain text files vs. word processor files== There are important differences between plain text files created by a text editor and document files created by word processors such as Microsoft Word or WordPerfect. * A plain text file uses a character encoding such as UTF-8 or ASCII to represent numbers, letters, and symbols. The only non-printing characters in the file that can be used to format the text are newline, tab, and formfeed. Plain text files are often displayed using a monospace font so horizontal alignment and columnar formatting is sometimes done using space characters. * Word processor documents are generally stored in a binary format to allow for localization and formatted text, such as boldface, italics and multiple fonts, and to be structured into columns and tables. * Although they are often viewed with formatting, documents using markup languages are stored in plain text files that contain a combination of human-readable text and markup tags. For example, web pages are plain text with HTML tags to achieve formatting when rendered by a web browser. Many web pages also contain embedded JavaScript that is interpreted by the browser. Word processors were developed to allow formatting of text for presentation on a printed page, while text produced by text editors is generally used for other purposes, such as input data for a computer program. When both formats are available, the user must select with care. Saving a plain text file in a word-processor format adds formatting information that can make the text unreadable by a program that expects plain text. Conversely, saving a word-processor document as plain text removes any formatting information. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「text editor」の詳細全文を読む スポンサード リンク
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