** DotNET COBOL - Debugging Quick Information ** Start by reading the help - NetCOBOL for .NET V4.0(depending on level) users guide. - Look up "Debug "... or Debug Options... You can debug in .NET Visual Studio the same as VB.NET, C#, or other .NET Languages, setting breakpoints, running to cursor (allows you to bypass procedural copybooks, or entire sections of code), or you can step into your copybooks. Simply set your breakpoints on your left, then press F10, or press F11 to step into the first line.