# Macintosh based operating system specific issues

- A right click operation is executed by ctrl-click.
- The drag and drop operation from the Editor Window to one of the Palette Windows displays a false window boundary. This can be ignored and has no internal effect.
- A File Open selection for an existing input file defaults internally to a .xml extension. The correct file extension of .bng must be manually selected using the pull down box at the bottom of the file open window.

There are no other reported issues or bugs at this time.