XVT-Draw

XVT-Draw is a vector graphics drawing program. There were versions for Macintosh, Windows 2.x/3.x, and maybe other platforms. It was developed by Marc J. Rochkind and Advanced Programming Institute Ltd.

XVT-Draw is an early example of an application that uses the XVT (Extensible Virtual Toolkit) portability toolkit.

The Windows version has a native .vtd file format. The documentation says that the Macintosh format is different and incompatible.

Identification
VTD files start with bytes (decimal 54321).

Software

 * (for Windows)
 * XVT-Draw v1.5, at Internet Archive

Links

 * For what it's worth, the Internet Archive has this: XVT-Draw Registrants (example HyperCard)