How to add a macro description visible in Macro Manager?

Hello, all!

So while re-reading the Macro Management Article I noticed this interesting thing:

And then I searched and searched, but could not find any information about adding this description (inside the VBA file). Strangely enough all the fields in its options menu (Such as tooltip) are empty as well.

So how do I add this in a way that it shows when the VBA file is dropped in the macros folder, without further actions?