A programming flag used to disable one or more functions of a media player, such as Stop, Menu, and Chapter Skip. On a compliant player, it forces the viewer to wait as certain material plays before the main menu becomes available. Originally, this was used to require the viewer to see the copyright warning, but it has since been regularly abused to make advertising and promotional material unskippable. The illogic of this practice is that the people who will see this stuff obviously own the DVD, and the people who pirate the video via the internet won't get the warning or ads.