bed in a Document Type Definition (DTD) or a schema document. [Computer and Information Sciences] 
idef0 
n., A document or code that can be read by a human being, with or without the aid of magnification, as opposed to one in a format that can be read only by a computer. [Computer and Information Sciences] 
identify 
n., A method of presenting digital information that allows related files and elements of data to be interlinked, rather than viewed in linear sequence; usually differentiated from the normal t