Microsoft Script Debugger
Microsoft Script Debugger is lightweight debugger for Windows Script Host-supported scripting languages, such as VBScript and JScript. It offers a minimal but workable user interface that allows the user to step through execution of script code line by line, and examine values of variables after any step. In effect, it provides a way for developers to see script code behavior as it runs, thus eliminating much of the guess-work, when things don't quite work as intended.
Microsoft considers it to be deprecated in favor of the more sophisticated Microsoft Script Editor (MSE.EXE), an optional tool included in Microsoft Office 2000 up to Office 2003.[1][2]
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