The Prohibition (writ) reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)
Prohibition (or writ of prohibition) is the name of one of the prerogative writs. It corresponds to mandamus, in that mandamus is a court's order requiring the person to whom it is directed to perform the specified act, whereas prohibition is a court's order not to.