Is it possible to label the in and out ports that appear on subpatchers in my patches when I create inlets or outlets?

I tried entering names in the annotation, hint and scripting name, but none of these show up when I hover over the port with the mouse.

I seem to remember reading that this was somehow possible, but don't remember where.

Is it possible to label the in and out ports that appear on subpatchers in my patches when I create inlets or outlets? 

I tried entering names in the annotation, hint and scripting name, but none of these show up when I hover over the port with the mouse. 

I seem to remember reading that this was somehow possible, but don't remember where. 

labeling ports in patchers