Markup
Within a text file such as an HTML file, elements are marked up using tags which explain the purpose of that part of the content.
Types of markup language
- Presentational Markup:
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Used by traditional word processing system with WYSIWYG (what you see it is what you get); this is hidden from human authors, users and editors.
- Procedural Markup:
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Combined with text to provide instructions on text processing to programs. This text is visibly manipulated by the author.
- Descriptive Markup:
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Labels sections of documents as to how the program should handle them. For example, the HTML
<td >defines a cell in a HTML table.