Zooming is the process of changing the magnification level of the view of your board. You can zoom in for a more microscopic view or zoom out for a more telescopic view. For example you can zoom out to see the whole board or zoom in to look closely at a particular detail.

alt To zoom in or out:
  1. Press the "+" or "-" key; -OR-
  2. Choose View | Zoom | In or Out;  -OR-
  3. On the top toolbar select Zoom and left or right click anywhere on board; -OR-
  4. On the top toolbar Zoom section select a value from the drop-down list.
alt To zoom to actual size:
  1. Press the "1" key; -OR-
  2. Choose View | Zoom | 100%; -OR-
  3. On the Zoom toolbar click "1:1".
alt To zoom the board to fit the screen:
  1. Press the "=" key; -OR-
  2. Choose View | Zoom | To Fit; -OR-
  3. On the Zoom toolbar press "X" or select "To Fit".
alt To fit a selection to the screen:
  1. Press the "0" key; -OR-
  2. Choose View | Zoom | To Selection
alt To zoom the board to a specific zoom level:
  1. On the Zoom toolbar select a value from the drop-down list.
alt To zoom in to a specific area of the board:
  1. Select the Zoom tool.
  2. Click and drag the mouse cursor to select a rectangular area.

alt The Zoom In and Zoom Out commands switch to the nearest zoom factor available in the drop-down list on the Zoom toolbar: 10%; 25%; 50%; 75%; 100%; 150%; 200%; 500%; 1000%; 1500%; 2000%; 5000%.

alt In case zooming is slow, consider disabling smooth zooming by unchecking the  Use smooth zoom checkbox at Edit | Preferences | General.

See also: Scrolling the Board.