Halliday & Matthiessen (2004: 482):
Whereas any clause that is projected by another clause, verbal or mental, is either a quote (paratactic) or a report (hypotactic, or embedded if the process is a noun), any clause that has the status of ‘projected’ but without any projecting process is a fact and is embedded, either as a nominalisation serving as Head or as Postmodifier to a ‘fact’ noun serving as Head.
