In general, BDSM play is usually structured such that it is possible for the consenting partner to withdraw his or her consent during a scene;[REF] for example, by using a safeword that was agreed on in advance [REF].
Bondage and discipline are two aspects of BDSM that do not seem to relate to each other because of the type of activities involved, but they have conceptual similarities, and that is why they appear jointly.