Adds/Removes the specified Frame. Remove - Set the Remove property to True if you wish to remove the specified FrameIndex, ...

Adds/Removes the specified Frame.  Remove     - Set the Remove property to True if you wish to remove the              specified FrameIndex, otherwise False [the default] to Insert the              ImageFile before the specified FrameIndex ImageFile  - Set the ImageFile property to the ImageFile object whose              ActiveFrame that you wish to add (ignored for Remove) FrameIndex - For Remove, set the FrameIndex property to the index of the frame              you wish to remove, otherwise for add, set the FrameIndex to the              index of the frame to insert the ImageFile before, otherwise 0              [the default] to append a frame from the ImageFile specified