Richard clicked a couple of buttons and solved the problem.
As he was walking away, I called after him, 'So, what was wrong?
He replied, 'It was an ID ten T error.'
I didn't want to appear stupid, but nonetheless inquired, 'An, ID ten T error?
What's that? In case I need to fix it again.'
Richard grinned. 'Haven't you ever heard of an ID ten T error before?'
'No,' I replied.
'Write it down,' he said, 'and I think you'll figure it out.'
So I wrote down: "ID10T"