This is no longer relevant. The default behavior when pressing Enter is now a single line.
Currently when you are typing in your assignments and hit the enter key it does a double space instead of a single space. This is the default behavior set in Tiny. why I do not know. I have yet to talk to someone who likes the double spacing on enter. anyway i digress. The workaround until we can change the behavior for good is to hold down the shift key while hitting the enter key