XML is a(71)language for documents containing(72)information. Structured information contains both content(words, pictures, etc.)and some indication of what role that content plays(for example, content in a section heading has a different meaning from content in a footnote, which means something different than content in a figure caption or content in a database table, etc.). Almost all documents have some structure. A markup language is a(73)to(74)structures in a document. The XML specification defines a standard way to add markup to(75).