Now I see! In the situation you describe, it would be best to put the Nemeth Code switch indicators on their own lines (within the box) both before and after the rows of information and so use contractions in the heading that's within the box.
The situation is now:
- a boxed table
- followed by material that will be in UEB
- with a table heading that is all text inside the box
- with row headings that are words
- and entries that are all tally marks
In this scenario, I would put the opening Nemeth Code indicator on a line by itself in cell 1 immediately before the first row. And I would put the Nemeth Code terminator on a line by itself in cell 1 immediately before the closing box line. Then I would uncontract all the row headings [and eat two cookies in celebration].