(Created page with "* '''矩形''': draws a rectangle that starts from the click point and grows following the mouse; to select, release the left mouse button * '''橢圓''' : draws an ellipse ce...")
* '''矩形''': draws a rectangle that starts from the click point and grows following the mouse; to select, release the left mouse button
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* '''矩形''': 先點擊一個點,然後拖動滑鼠變大;選擇好放開左鍵
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* '''橢圓''' : draws an ellipse centered in the click point that grows following the mouse; to select, release the left mouse button
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* '''橢圓''' : 先點擊橢圓圓心,然後拖動滑鼠變大;選擇好放開左鍵
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* '''多邊形''' : click in two different points to draw a line and a third point to create a polygon. Double click to close the polygon and select all the area inside its borders
* '''自由封閉線''' : click and hold the left mouse button to start drawing a line that follows the mouse. Release the left mouse button to close the line and select all the area inside its borders
* '''自由開放線''' : click and hold the left mouse button to start drawing a line that follows the mouse. Release the left mouse button to select all the data exactly below the drawn line
