I used to be able to double click the toolbar at the top of Safari, programmes etc to minimise the content to the bottom right hand side of the Dock. Since turning on my MacBook Pro 13' recently I can now only do this action by clicking the top left yellow button with the negative ( - ) sign in it. I'm not sure how I managed to changed this setting but I would like to be able to change it to how it was previously as it was far more convenient & quicker. Any solutions would be grateful! Also, not sure if you call them 'Windows' on Macs?