To use the Construction Progress Viewer, select a year from the bar at the top, then select an available date. On the bottom is a control bar. Listed below are a description of the controls from left to right, followed by a keyboard shortcut, if applicable:

• Zoom In (“a” key)
• Zoom Out (“z” key)
• Pan Left (left arrow key)
• Pan Up (up arrow key)
• Pan Down (down arrow key)
• Pan Right (right arrow key)
• Reset View