Preferences
Define preferences for drawing sheets.
On the Drawing tab, click the
                    Preferences icon.

            | Preference | Description | 
|---|---|
| Projection | First Angle: The object lies between
                                    you and the plane of projection. The left view is projected on
                                    the right plane and vice versa. This is the standard in India
                                    and Europe. Third Angle: The plane or projection lies between you and the object. The left view is projected on the left plane itself. This is the standard in USA.  | 
                            
| Default Sheet Properties | Define the default size, frame type, and line thickness of
                                            sheets. Size:  
 Frame Type: Choose from None, Simple, and With Markers. Line Thickness: Enter the thickness of the Internal line and External line.  |