REGISTER_ENUM (StartCrossFadeItem);
REGISTER_ENUM (EndCrossFadeItem);
REGISTER_ENUM (CrossfadeViewItem);
+ REGISTER_ENUM (TimecodeRulerItem);
+ REGISTER_ENUM (MinsecRulerItem);
+ REGISTER_ENUM (BBTRulerItem);
+ REGISTER_ENUM (SamplesRulerItem);
REGISTER (item_type);
}