Refactor Pearl's mark_in_direction, and invert a parameter.

[sgt-puzzles.git] / puzzles.but

diff --git a/puzzles.but b/puzzles.but
index e22c438c000d197ba3c80da9c05ebad9d73930df..65782af8145c8b4d252f15ab8c411cc48e78dd8b 100644 (file)
--- a/puzzles.but
+++ b/puzzles.but
@@ -786,7 +786,8 @@ around the board. Pressing the return key then allows you to use the
 cursor keys to drag a rectangle out from that position, and pressing
 the return key again completes the rectangle. Using the space bar
 instead of the return key allows you to erase the contents of a
-rectangle without affecting its edges, as above.
+rectangle without affecting its edges, as above. Pressing escape
+cancels a drag.
 
 When a rectangle of the correct size is completed, it will be shaded.
 
@@ -1708,7 +1709,10 @@ the game entirely with one button if you need to.)
 
 You can also use the cursor keys to move around the grid. Pressing the
 return or space keys will place a \cw{\\} or a \cw{/}, respectively,
-and will then cycle them as above.
+and will then cycle them as above.  You can also press \cw{/} or
+\cw{\\} to place a \cw{/} or \cw{\\}, respectively, independent of
+what is already in the cursor square.  Backspace removes any line from
+the cursor square.
 
 (All the actions described in \k{common-actions} are also available.)
 
@@ -2453,10 +2457,11 @@ press 0, Space, Backspace or Enter to clear it again (or use the Undo
 feature).
 
 You can also move around the grid with the cursor keys; typing a digit will
-fill the square containing the cursor with that number, or typing 0, Space,
-or Enter will clear it. You can also select multiple squares for numbering
-or clearing by using the return key, before typing a digit to fill in the
-highlighted squares (as above).
+fill the square containing the cursor with that number; typing 0 will clear
+it.  You can also select multiple squares for numbering or clearing with the
+return and arrow keys, before typing a digit to fill or clear the highlighted
+squares (as above).  The space bar adds and removes single squares to and from
+the selection.  Backspace and escape remove all squares from the selection.
 
 (All the actions described in \k{common-actions} are also available.)
 
@@ -2921,6 +2926,7 @@ pressing Space does the same as a right button click.  Moving with the
 cursor keys while holding Shift will place dots in all squares that
 are moved through.
 
+
 (All the actions described in \k{common-actions} are also available.)
 
 \H{range-parameters} \I{parameters, for Range}Range parameters