New Game topic, some fixes

docs/reference/game/touching-edge.md

@@ -0,0 +1,40 @@
+# Touching Edge
+
+Find whether the sprite is touching the edge of the [LED screen](/device/screen).
+
+Sprites are touching the edge if they overlap with an LED on the edge
+of the screen.
+
+```sig
+let item: game.LedSprite = null;
+item.isTouchingEdge();
+```
+
+### Parameters
+
+* a **sprite** that might be touching the edge of the screen
+
+### Returns
+
+`true` if the sprite is touching the edge of the screen
+
+### Example
+
+This program makes a sprite in the middle of the left edge of the LED screen.
+Then it says `EDGY!` if it's on the edge (which it is!), and `SAFE!` if it's
+not on the edge.
+
+```blocks
+let item = game.createSprite(0, 2);
+if (item.isTouchingEdge()) {
+    basic.showString("EDGY!");
+} else {
+    basic.showString("SAFE!");
+}
+```
+	
+### See also
+
+[create sprite](/reference/game/create-sprite),
+[touching](/reference/game/touching),
+[if on edge, bounce](/reference/game/if-on-edge-bounce)

docs/reference/game/touching.md

@@ -11,6 +11,7 @@ item.isTouching(null);
 
 ### Parameters
 
+* a **sprite** you are checking
 * another **sprite** that might be touching the one you are checking
 
 ### Returns
@@ -35,5 +36,6 @@ if (matter.isTouching(antimatter)) {
 
 ### See also
 
+[create sprite](/reference/game/create-sprite),
 [touching edge](/reference/game/touching-edge),
 [if on edge, bounce](/reference/game/if-on-edge-bounce)