Zoom In
There are two ways to enlarge the map in the current Map, one is to scroll up with the middle mouse button, and the other is to use the Map-> Browse-> Enlarge button. If the Zoom In button is active, the state of the mouse in the current Map changes to 
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In addition, when the mouse is in the roaming or selection state, pressing the letter "Z" key in the keyboard can also switch the mouse state of the current Map to the zoom-in state.
The two modes of operation by activating the Zoom In button are as follows:
- Click to enlarge: Click the mouse in the Map, and the map will be enlarged and displayed with the position where the mouse is clicked as the center point of the map, and the magnification is 2 times.
- Select and enlarge the rectangular box: Click and hold the left mouse button, drag the mouse along the diagonal line, and you can see a temporary rectangular box whose size changes with Move Stop by Mouse. Release the left mouse button at the appropriate position to Zoom In the range determined by the temporary rectangular area. The magnified Display Effects are: the center point of the temporary rectangle is taken as the center point of the map, and the magnification of the map is the smaller one of the ratios of the width and height of the Map to the width and height of the temporary rectangle.
Zoom Out
There are two ways to zoom out the map in the current Map, one is to scroll down the middle mouse button, and the other is to use the Map-> Browse-> Zoom Out button. If the Zoom Out button is active, the mouse status in the current Map is changed to 
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In addition, when the mouse is in the roaming or selection state, pressing the letter "X" key in the keyboard can also switch the current Map state to the zoom-out state.
- Click to zoom out: Click the mouse in the Map, and the map will Zoom out with the position where the mouse clicks as the center point of the map, and the zoom out multiple is 2.
- Rectangular box selection is reduced: Click and hold the left mouse button, drag the mouse along the diagonal line, and you can see a temporary rectangular box whose size changes with Move Stop by Mouse. Release the left mouse button at the appropriate position to Zoom Out the range determined by the temporary rectangular area. The Display Effects after zooming out is that the center point of the temporary rectangle is the center point of the map Zoom out, and the reduction factor is the smaller value of the ratios of the width and height of the Map to the width and height of the temporary rectangle.
Free Zoom map
- Free Zoom
Click the "Zoom" Drop-down Button, click the "Free Zoom" item in the pop-up drop-down menu, and the Operation Status in the current Map will change to the Free Zoom status. And the state of the mouse in the current Map changes to
. In addition, press the C key to change the Operation Status in the current Map to the Free Zoom status. - Hold down the left mouse button in the current Map and drag to zoom in or Zoom Out; release the left mouse button to stop the Free Zoom operation and refresh the map once.
- Since the map is not refreshed in real time when pressing and holding the left mouse button to Free Zoom the map, a blank map part will appear in the Map when Zoom Out. The map will not be refreshed until the Free Zoom operation is stopped by releasing the left mouse button.
- If you need to refresh the map in real time during Free Zoom, you can use the "Real-time Free Zoom" function.
- Real-time Free Zoom
Click The Zoom Drop-down Button, and select the Real-time Free Zoom "item in the pop-up drop-down menu, and the Operation Status in the current Map will change to the Real-time Free Zoom status. And the state of the mouse in the current Map changes to
. - Hold down the left mouse button in the current Map and drag to zoom in or Zoom Out. Release the left mouse button to stop the Real-time Free Zoom operation. In the process of pressing the left mouse button Free Zoom map, the map is refreshed in real time, so that the zooming process of the map is very smooth.