Managing DWG Settings
The DWG settings file resides in the local directory pointed to by the configuration variable MS_DWGDATA.
By default, MS_DWGDATA is set to the %LOCALAPPDATA%\Bentley\<product_name>\<product_version>\prefs\dwgdata\ directory. A system administrator can override the defaults for these settings by setting the configuration variable MS_DWGSYSTEMDATA to point to the directory containing the standard settings file.
The display and plotting color tables (DwgDisplayColor.tbl and DwgPlotColors.tbl) can also be controlled by placing them in the MS_DWGSYSTEMDATA directory.
The Do Not Display Again setting for the DWG/DXF Units Alert is stored in the DWG settings file, along with the other settings.