  The regular type of a real hyper-surface M in an (almost) complex manifold at
some point p is the maximal contact order at p of M with germs of non singular
(pseudo) holomorphic disks. The main purpose of this paper is to give two
intrinsic characterizations the type: one in terms of Lie brackets of a complex
tangent vector field on M, the other in terms of some kind of derivatives of
the Levi form.
