This paper introduces Hybrid AL, an extension of the action language AL that allows
to reason about actions and their consequences for the domains where such
consequences can be described practically only as results of the computations by
exetrnal algorithms. While the semantics of the action language AL is defined using
ASP, the semantics of the action language Hybrid AL is defined using Hybrid ASP -
an extension of ASP allowing rules to control sequential processing of arbitrary
binary data by external algorithms.