\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.
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
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
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
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
pick it up and move it around to make it clearer. It will swivel
constantly as you drag it, to stay pointed at its parent dot.)
+You can also use the cursor keys to move around the grid squares and
+lines. Pressing the return key when over a grid line will draw or
+clear its edge, as above. Pressing the return key when over a dot will
+pick up an arrow, to be dropped the nest time the return key is
+pressed; this can also be used to move existing arrows around, removing
+them by dropping them on a dot or another arrow.
+
(All the actions described in \k{common-actions} are also available.)
\H{galaxies-parameters} \I{parameters, for Galaxies}Galaxies parameters
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).
+
(All the actions described in \k{common-actions} are also available.)
\H{filling-parameters} \I{parameters, for Filling}Filling parameters