Menus are sometimes hierarchically organized, allowing navigation through different levels of the menu structure. Selecting a menu entry with an arrow will expand it, showing a second menu (the sub-menu) with options related to the selected entry.
Torsion springs are normally mounted horizontally above the opening of your garage door. When you pull the door down, cables attached to the bottom corners actually force the springs to wind up, in turn energizing the system.
3. Weigh your garage door. This can still be done when only one extension spring is broken. You may need to use a 2x4 or some other object to pry the garage door open. Place scale under the garage door on the side of the door with the broken extension spring.