Usually you just click in it and start typing... If that's not working then maybe what you're seeing is not a real text field.
In that case you can probably use the Add Text Comment tool under the Comment panel to add text to the file.
Usually you just click in it and start typing... If that's not working then maybe what you're seeing is not a real text field.
In that case you can probably use the Add Text Comment tool under the Comment panel to add text to the file.