These documents can include restrictive covenants, non-compete agreements or confidentiality agreements.

Examples of modal clauses include property contracts, restrictive covenants and negative servitudes that have to be registered.

Deeds for the original homeowners include restrictive covenants (now unenforceable) that preclude sale to Blacks or Jews.

Additional impediments to clear title include restrictions and covenants and, in lawyer language, restrictive covenants.

Mr. Raines said that the plan includes "tough covenants" to keep pressure on the city to act wisely.

"The Monsignor plans to include covenants in the proposal but there is always a lawyer that can challenge a covenant," he said.

But most include covenants insuring the occupants the right to 'quiet enjoyment' or undisturbed possession of the property.

Leases include dependent covenants - if the landlord fails to perform their duties, the tenant will be relieved of paying rent.

Other tools include full-fee purchase, voluntary deed restrictions, covenants, and agreements.

These would include real covenants, easements and other servitudes.