Eclipse has that \"+/-\" on the left to expand and collapse blocks of code.
I\'ve got tens of thousands of lines to go through and would really like to just collapse
In addition to the hotkey, if you right click in the gutter where you see the +/-, there is a context menu item 'Folding.' Opening the submenu associated with this, you can see a 'Collapse All' item. this will also do what you wish.