The emphasis directive is very similar to the literal directive except that it causes its argument to be typeset in an emphasised manner (italics). Like the literal directive, the emphasis directive protects its text argument.
emphasise = "@/" ordinary_text "@/"
Example:
@C What you @/really@/ need, of course, is a @/great@/, @/big@/, network with packets just flying @/everywhere@/. This section implements an interface to such a @/humungeous@/ network.