Circle is a visual highlighting command which draws a colored circle on the
specified square. Its purpose is to add emphasis to commentary given by
the examiner of a game. For example, during a private lesson, a coach may
try to illustrate the influence of a knight on e5 by typing "circle c6"
followed by the commands "circle d7" and "circle f7" and "circle g6".
Other occasions for the use of the circle command: special event lectures,
group analysis sessions, and live ICC broadcasts from international
tournaments and matches.
Recent versions of Blitzin allow the examiner to right-click to
place a circle, and ctrl-right-click to remove it.
To remove a circle at e5, use "uncircle e5". Also, circles are
automatically erased from the board whenever someone plays a move
or steps forward or backward through the game.
Note that you must be examining a game in order to use the circle command.
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ICC Help: circle