Here's another question: Is it possible to change a line of text
depending on the value contained in a cell? For example, if I have a
decimal which is used as an exponent, can I concatenate that value with
a units string?

Example: value = 0.333, units = "kg" => "kg^0.333" (^ = font
superscript)
Now change the value to 0.396 and the units label should read
"kg^0.396".