Magic Zoom
Right click on the playing window, then turn on the menu item "Magic Zoom" from the popup menu to open the magic zoom window.
You will see a magic zoom window overlayed on the playing window like the below.
To move the magic zoom window, you may move mouse cursor on to the magic zoom window, then press down the mouse's left
button, drag the magic zoom window to an appropriate place and release it.
To change the magic zoom window's size, you may use mouse cursor to drag and drop the four sides of the magic zoom window.
You may also define your magic zoom window's default size and transparency in the options dialog.
See Also:
Options
Video Options
Popup Menu