Lat. inside civil-law. An action or fit; a right or cause of activity. It should be mentioned that this term indicates both continuing to enforce a right in a court therefore the right itself that is sought becoming implemented.
In 1605 he published his Remains concerning Britain, a book of collections from the Britannia, which quickly passed through seven editions; and he wrote an official account of the trial of the Gunpowder Plot conspirators as Actio in Henricum Garnetum, Societatis Jesuiticae in Anglia superiorem et caeteros.