X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/blobdiff_plain/2c580e640c7a19be5700be84b2429a5aea966a2f..b63898fe13e34da868c47c7a130d7b3eae74ebf4:/puzzles.but

diff --git a/puzzles.but b/puzzles.but
index 387910c..6b75d11 100644
--- a/puzzles.but
+++ b/puzzles.but
@@ -761,11 +761,19 @@ specification.
 
 \H{rectangles-controls} \I{controls, for Rectangles}Rectangles controls
 
-This game is played with the mouse.
+This game is played with the mouse or cursor keys.
+
+Left-click any edge to toggle it on or off, or left-click and drag to draw
+an entire rectangle (or line) on the grid in one go (removing any existing
+edges within that rectangle). Right-clicking and dragging will allow you
+to erase the contents of a rectangle without affecting its edges. 
 
-Left-click any edge to toggle it on or off, or click and drag to draw
-an entire rectangle (or line) on the grid in one go (removing any
-existing edges within that rectangle).
+Alternatively, use the cursor keys to move the position indicator
+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.
 
 When a rectangle of the correct size is completed, it will be shaded.
 
@@ -934,7 +942,8 @@ Space to clear it again (or use the Undo feature).
 
 If you \e{right}-click in a square and then type a number, that
 number will be entered in the square as a \q{pencil mark}. You can
-have pencil marks for multiple numbers in the same square.
+have pencil marks for multiple numbers in the same square. Squares
+containing filled-in numbers cannot also contain pencil marks.
 
 The game pays no attention to pencil marks, so exactly what you use
 them for is up to you: you can use them as reminders that a
@@ -949,6 +958,12 @@ All pencil marks in a square are erased when you left-click and type
 a number, or when you left-click and press space. Right-clicking and
 pressing space will also erase pencil marks.
 
+Alternatively, use the cursor keys to move the mark around the grid.
+Pressing the return key toggles the mark (from a normal mark to a
+pencil mark), and typing a number in is entered in the square in the
+appropriate way; typing in a 0 or using the space bar will clear a
+filled square. 
+
 (All the actions described in \k{common-actions} are also available.)
 
 \H{solo-parameters} \I{parameters, for Solo}Solo parameters
@@ -1634,6 +1649,10 @@ blank, and if you right-click repeatedly the square will change from
 blank to \cw{/} to \cw{\\} back to blank. (Therefore, you can play
 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.
+
 (All the actions described in \k{common-actions} are also available.)
 
 \H{slant-parameters} \I{parameters, for Slant}Slant parameters
@@ -1998,6 +2017,11 @@ blank square in the region you cover will be turned green, and no
 other squares will be affected. (This is useful for clearing the
 remainder of a row once you have placed all its tents.)
 
+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.
+
 (All the actions described in \k{common-actions} are also available.)
 
 \H{tents-parameters} \I{parameters, for Tents}Tents parameters