Advantages/Disadvantages of Using Sub Main

Can you please tell me when do you use Sub Main and the advantages of using it?

In certain programs, initialization code has to run before any windows load. In many cases, this code isn’t specifically related to a window, so it is put in a separate .BAS module. In order to let this code run first, you have to call the routines from Sub Main. Normally, at the end of Sub Main, you tell a window to Show and execution proceeds.

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