Underneath, there is a preview of a Form 2210 page 4 (I can't see very much at a time - the frame is short and has a scroll bar).
All of the text boxes for this form appear to be disabled.
Background:
I had been paying estimated taxes during the year, and felt I was putting in (more than?) sufficient amounts. I made a significant chunk of income towards the end of the year.
I'm thinking I may have slipped through the cracks somehow. The message appears to use field names that a programmer would use for variable naming - not something you'd show to an end-user.
