XHTML is a stricter version of HTML that combines features of HTML and XML. An XHTML editor is a tool for creating XHTML and may include other editors for web development. It may have a text editor and a WYSIWYG editor, but some WYSIWYG editors may not generate proper markup. Features of an XHTML editor may include the ability to choose the version of XHTML, validation, error log file, HTML to XHTML conversion function, syntax highlighting, word wrap, and UTF-8 Unicode.
HTML is HyperText Markup Language, a language derived from SGML (Standard Generalized Markup Language) and used on the World Wide Web to create structures for presenting documents and create links between them, using tags and a set of rules. XML is EXtensible Markup Language and simplified SGML. XHTML is EXtensible HTML, a markup language that combines features of HTML and XML, with stricter rules than those applied in HTML coding. An XHTML editor is an environment designed for creating XHTML.
An XHTML editor usually doesn’t come as a standalone product. It’s quite common to find an XHTML editor built into a product that provides a more complete editor package for web development. For example, a software package might combine an XHTML editor with an HTML editor. A more complete package might include an HTML editor, an XHTML editor, a Cascading Style Sheets (CSS) editor, and a JavaScript® editor.
XHTML editors often have both a text editor for entering XHTML and a WYSIWYG (What You See Is What You Get) editor, and sometimes it is only possible to show the WYSIWYG window. The aim is to allow a user who has not learned the technical aspects of web design, such as markup languages and CSS, to still be able to generate and edit content. However, one problem with web pages and websites created with proper XHTML is WYSIWYG editors that don’t generate proper markup. XStandard® highlights the problem and builds XHTML WYSIWYG Editor to fix it, ensuring that only markup that meets best practice criteria is used.
One important feature you might find in an XHTML editor is the ability to choose the version of XHTML you’re working on. Adobe® Dreamweaver® CS4, for example, offers a choice of XHTML 1.0 Transitional, XHTML 1.0 Strict, XHTML 1.1, or XHTML 1.0 Mobile. HTML 4.01 Transitional and HTML 4.01 Strict are also offered.
However, there are some other features that can be present in an XHTML editor. One valuable feature that isn’t universally offered is XHTML validation. Alternatively, a dynamic fix can be offered along with an error log file. An HTML to XHTML conversion function may also be included. Other desirable features include syntax highlighting, word wrap, and UTF-8 Unicode (UCS/Unicode 8-bit transform format) – UCS stands for Universal Character Set – to allow working on multilingual files.
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