What is Allegata?

Legal Definition
A word which the emperors formerly signed at the bottom of their rescripts and constitutions; under other instrumets they usually wrote nata or testate. Ency. Lond.
-- Bouviers Law Dictionary
Legal Definition
In Roman law. A word which the emperors formerly signed at the bottom of their rescripts and constitutions; under other instruments they usually wrote Hgnata or testata. Ena Lond.
-- Black's Law Dictionary