man qcad (Commandes) - A professional CAD System.
NAME
qcad - A professional CAD System.
DESCRIPTION
QCad is a professional CAD System. With QCad you can easily construct and change drawings with ISO-texts and many other features and save them as DXF-files. These DXF-files are the interface to many CAD-systems such as AutoCAD(R) and many others.
QCad has no special invocation parameters. You can find the useful docs in /usr/share/doc/qcad/html/