Abstract: A portable putting practice system for users of all ages and skill levels, whereby the system enables a user to increase putting accuracy, improve range of motion for a putting swing, and develop consistent putting backswings of varying extensions corresponding to desired target distances.

Abstract: A state machine language having a syntax requiring each state to be uniquely named and having associated state definition information including:

Abstract: A sealing arrangement between an opening leaf and a frame, one of the frame and leaf providing an elongate recess, and the other of the leaf and frame carrying an elongate seal which, when the leaf is closed with respect to the frame, is received in the recess, wherein the elongate seal includes a plurality of axially extending outwardly projecting formations, and an internal hollow, the recess and the seal being configured such that as the leaf is closed and the seal is received in the recess, a first of the axially extending outwardly projecting formations of the seal engages with a respective first part of an inside surface of the recess and as the leaf is continued to be closed, the seal becomes deformed in a manner to cause the or at least one of the other axially extending outwardly projecting formations to be urged into sealing engagement with a second part of the inside surface of the recess.