1. A program that breaks large units of data into smaller, more easily interpreted pieces. For example, a will browser reads documents prepared with a markup language (such as HTML). The markup language identiies the parts of the document (such as document headings, bulleted lists, or body text), but says nothing about how those portions of the document should appear on-screen. The parser reads the tagged text and formats the various portions of the document for on-screen display. See Hypertext Markup Language (HTML). From QUECID