No specific info about version 4.0. Please visit the main page of Wincad on Software Informer.
A utility for viewing, converting, and printing DWG files.
This program is designed to browse, view, measure and print DWG/DXF/DWF files.
It lets you convert DWG and DXF drawings to DWF files.
DWG DXF Converter lets you batch convert DWG Files into DXF files.
Batch convert DWG DXF DWF, and DWFx files to high quality Image files.
An AutoCAD viewer and converter for DWG and DXF files.