Create a new track (see 9.2.1) with momentum = energy = 0. The corresponding space is allocated dynamically and NOT kept when a new event is read in. INEW is a track without a particle name. None of the access methods described in Ch. 7 give access to it; the only access to the track is with the track number INEW. Consequently, it can never be dropped (see 9.2.6). The new track does NOT belong to a specific class (KRECO / KMONTE / Lorentz frame).