length will turn out to be possible.
-\C{rectangles} \i{Rectangles}
+\C{rect} \i{Rectangles}
\cfg{winhelp-topic}{games.rectangles}
\c |......O.|
\c H........|
\c |.....O..|
-\c 12-RH---
+\c 12-RR---
As shown, it is possible for a beam to receive multiple reflections
before re-emerging (see turn 3). Similarly, a beam may be reflected
You can also use the cursor keys to move around the grid. Pressing the
return key over an empty square will place a tent, and pressing the
space bar over an empty square will colour it green; either key will
-clear an occupied square.
+clear an occupied square. Holding Shift and pressing the cursor keys
+will colour empty squares green. Holding Control and pressing the
+cursor keys will colour green both empty squares and squares with tents.
(All the actions described in \k{common-actions} are also available.)