2008

viewports and transform tools do not respond properly. When you use them,
the cursor does not move smoothly.
For example, if you have a file that is a mile wide, but your system units are
millimeters, you have a scene width of 1.6 million units, which is too great a
value. If you change your system unit to feet, this is less taxing on the system.
If any side of the scene's bounding box measures larger than 1,000,000 system
units, you will see the following dialog:
DWG/DXF Import: Geometry Panel
File menu > Import > AutoCAD Drawing (*.DWG, *.DXF) > Geometry panel
The Geometry panel of the Import Options dialog controls how the software
derives AutoCAD primitives and whether 3ds Max uses the scene material
definitions when linking to or reloading the AutoCAD drawing. It also presents
options for geometry translation and for toggling inclusion of certain elements
in the DWG or DXF file.
6984 | Chapter 21 Managing Scenes and Projects