markup
In computerised document preparation, a method of
adding information to the text indicating the logical
components of a document, or instructions for layout of the
text on the page or other information which can be interpreted
by some automatic system.
For example, the source of {this dictionary} is marked up by
enclosing cross-references in curly braces which are
significant to the {World-Wide Web} server software.
(1995-03-30)