[sloucher]

This is simply describing a method in the Excel object library, which is not implemented in C#. The method pre-dates C# by many years.

FWIW the place to look for documentation of Application.Run is here: https://docs.microsoft.com/en-us/office/vba/api/excel.applic...

[tanseydavid]

I think that the complaint was about MS technical documentation which is justified IMHO.

MS technical documentation has always been more concerned with quantity over quality.