Art. 283 - (Unconstitutionality by omission) TITLE II - Revision of the Constitution Art. 284 - (Competence and time for revisions) Art. 285 - (Initiating revisions) Art. 286 - (Passage and enactment) Art. 287 - (New text of the Constitution) Art. 288 - (Matters in which revision is restricted) Art. 289 - (Circumstances in which revision is restricted) Final and transitional provisions Art. 290 - (Previous law) Art. 291 - (Districts) Art. 292 - (Criminalisation and trial of PIDE/DGS agents and officials) Art. 293 - (Reprivatisation of property nationalised after 25 April 1974) Art. 294 - (Regime applicable to local authority organs) Art. 295 - (Referenda on European treaties) Art. 296 - (Date and entry into force of the Constitution)