In Scotch law. These are either (1) actions of proper improbatiou for declaring a writing false or forged; (2) actions of reductlon-improbation for the production of a writing in order to have it set aside or its effect ascertained nn-der the certification that the writing if uot produced shall be declared false or forged; and (3) actions of simple reduction, for de-claring a writing called for null until pro-duced. Ersk. Prln. 4,1, 5