How can I add tags to a question

Douglas McPhaden

When I'm asking this question to verify a response to another question. Big response indicated that I could add A tag with two words and a space in between them, by typing the two words in following them with a comma. I will try this now

1ByrdLady

Once you start typing a drop down list of potential tags will appear.

Douglas McPhaden

What happens on a no find.