Midi Key editor - Info Line - Text Field function

I have been searching online trying to find the purpose of the Text field on the Key Editor Info Line. I can hover over and change the other fields on the Info line but I can’t affect the Text field at all. Can anyone tell me the purpose of this field? I did read something that seemed to suggest that if you select a note you could label it there but that doesn’t work for me. I have Cubase Elements.

If in the Sore Editor you add lyrics, those will appear in the Text field on the Info Line in the Key Editor.

OK, thank you very much.