By accident I've discovered the following:
- I open the messages app and write some text in the message area
- I write a word that the phone doesn't have in its dictionary and it gets a red dotted underline
- I tap on it and it gains a pink highlight and the black menu appears suggesting alternative words
At this point I can hold my finger on the red highlight and then drag the word around the screen. It appears in a white background rounded rectangle with a superimposed green plus, while the misspelled word in the message box is a grey color. The keyboard disappears.
I haven't been able to figure out what else to do with it- dropping it on various parts of the screen doesn't seem to do anything. I did wonder if it added it to the dictionary but it seems like such a bizarre UI for doing this, and the next time I write the word it still suggested as a misspelling..
What is this functionality for?