VARIANT : An optional selector for the frames to be duplicated from the collection. If missing or a scalar -1, all frames in the collection are duplicated. This selector may be an array of VARIANT, in which case the contents of each VARIANT are duplicated from the collection. Each VARIANT may be a single scalar index value (if negative, then all frames inthe source collection are duplicated), or it may be a single scalar LONGRANGE giving Start and End source collection indices, or it may be an array of collection index values or an array of LONGRANGE collection index ranges. In addition, it may be an McFrame object instance or an array of them to be added to the duplicated collection. Finally, the FramesSelector argument may be an McFrames collection (or an array of them) with a ParentImage the same as this one's. In this case frames from the source McFrames collection(s) are added to the duplicated McFrames collection.