XMM will conduct EPIC science observations during slews from one target to another. The expected accuracy for the attitude reconstruction during XMM slews is better than 1'. Slew observations cannot be proposed. The data obtained during slews are stored in so-called ``Slew Data Files'' (SDFs). Slew data will be processed by the PPS pipeline and the resulting science data files put into the XMM data archive (XMM Data Archive; § 7).