You know the problem you were having with typos earlier today could be because your spell check program is not set up to check invisible text. I've found one on the net that's free to download and does wonders with invisible text.
Heres a link:
That's better! It would be a bit difficult to judge an invisible GB - they'd all look the same !
To prove this, see the attached pic of the line-up of invisble Bf109s.
See what I mean ? (not sure about the shade of grey on that one third from the end).
And I thought it was frustrating when I drop little fiddly bits of models in the carpet, but dropping the whole model and not being able to find it is just too much!!!