Ok - so I'm anal about this... but for those of us who are, it does do terrible things to our ability to hear what is being said. So be kind to those of us who have this disability.
This is a great discussion of the need for provision
based on the old joke
“A panda walks into a cafe. He orders a sandwich, eats it, then draws a gun and fires two shots in the air.
"Why?" asks the confused waiter, as the panda makes towards the exit. The panda produces a badly punctuated wildlife annual and tosses it over his shoulder.
"I'm a panda," he says, at the door. "Look it up."
The waiter turns to the relevant entry and, sure enough, finds an explanation.
Panda. Large black-and-white bear-like mammal, native to China. Eats, shoots and leaves.”