I am not even able to describe how highly I recommend SnagIt. It has the feature you describe, plus a zillion more. https://www.techsmith.com/snagit.html

>Hi,
>
>Do you know how to add call-outs (though not sure this is the right term) to an image created with the snipping tool? For example, I can capture an application window but then I want to add arrows with the a short text in round or oval shapes. For example, the text in a shape would say "1 - enter ID", "2 - Click this button", and so on. Snipping tool has a pen or a highlighter but I can't make straight lines or round shapes with it.
>
>TIA