If you are wondering how to open SDR files on Windows 11/10, you can either use the parent tool, SmartDraw, or use an online tool or program.

BearPup sometimes wants to open a file in one program, and other times open it in another. He asked the Answer Line forum for an easy way to do this.

If you want to open & view ITHMB files on Windows 11/10, then you can use one of these free ITHMB file viewer tools for Windows PC.