To change the size of an entire open window, do the following:
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If the window is maximized in the display screen, click the Restore Down button at the top right corner of the window.
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Then, click and drag the lower-right corner of the status bar until the window is at the desired size.
To change the width or height of an individual pane, do the following:
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Hover the mouse pointer over a line between the panes until the pointer becomes two lines with outward pointing arrows, such as
or 
. Then, click and hold the mouse button, and drag that edge until the pane has the desired width or height. -
If the width or height of the pane becomes small enough, the program automatically collapses the window and displays a green arrow, such as
or
.Click the green arrow to restore the pane to the previous width or height.