Virtuozzo license versions enumeration.
enum _PRL_VERSION_ENUM { PRL_VERSION_ANY = 0, PRL_VERSION_3X = 1, PRL_VERSION_4X = 2, PRL_VERSION_5X = 3, PRL_VERSION_6X = 4, PRL_VERSION_7X = 5, PRL_VERSION_8X = 6, PRL_VERSION_9X = 7, PRL_VERSION_10X = 8 };
PrlEnums.h