7.1.3 Update

Released March 27, 2012

• Added support for AutoCAD 2013.
• Restored support for AutoCAD 2004, 2005, and 2006.
• Fixed IFC export to set units correctly to handle scaling errors in other programs.
• Fixed an error with the IFC export that would leave extra entities on the drawing when it was finished.
• Return and exhaust pressure values are now displayed as negative values in the pressure drop report on the drawing.
• Fixed crash when calculating loads in a zone with lots of rooms.