What does the checkbox Remove UOPs do?
UOP stands for User Operation Prohibited flags. These flags can determine which parts of the DVD are unskippable for example. By enabling this checkbox, you can remove these limitations. Note however, that this will render some actions possible where they are not expected, such as calling a menu where it was not expected. UOPs are only removed from menus if the option Recompress menus is also enabled, although UOPs are rarely a problem in menus.
