I build Structures for people to look at. There is always a type of interpretation I need them to make.

So, I need the ability to put at the top and bottom of the page an explanation of what they are looking at and how they should read it.

For instance, on a budget, to say "this sum of Remaining Estimate field is shown as 1w1d5h but should be interpreted as X hours; Export to Excel, total the field and multiply by our hourly rate * 24/8 for a billing number"

Else people land on the screen and say "so what?". I'd like it to be clear for them