Despite using LinqPad nearly every day, I can never seem to remember that the X at the top right of results tab means hide and does NOT mean "close results and free up memory". And yes I know the tooltip says 'Hide Results' and not 'Close Results' , but this never seems to stick in my memory.

Can't think of a single time when I have used the Ctrl-R Show Results option.

Would be possible, either to have another button to close, or an option to configure what the X button does?