Fixing parameters

docs/reference/images/create-big-image.md

@@ -4,7 +4,7 @@ Make a big [image](/reference/images/image) (picture) for the micro:bit
 [LED screen](/device/screen). The big image made of two squares.
 Each of the squares is five LEDs on a side, like a regular image.
 
-```blocks
+```sig
 images.createBigImage(`
     . . # . .   . . # . .
     . # # # .   . . # . .
@@ -14,6 +14,12 @@ images.createBigImage(`
     `);
 ```
 
+### Parameters
+
+* ``leds`` is a [string](/reference/types/string) that says which LEDs
+on the screen should be on and which should be off.
+
+
 ### Example: Flip-flopping arrow
 
 This program makes a big image with a picture of an arrow pointing up,

docs/reference/images/create-image.md

@@ -13,6 +13,11 @@ images.createImage(`
 `)
 ```
 
+### Parameters
+
+* ``leds`` is a [string](/reference/types/string) that says which LEDs
+on the screen should be on and which should be off.
+
 ### Example: Flip-flopping arrow
 
 If you press button `A`, this program will make a picture of an

docs/reference/images/scroll-image.md

@@ -3,9 +3,14 @@
 Scroll (slide) an [image](/reference/images/image) (picture) from one
 side to the other of the [LED screen](/device/screen).
 
+```sig
+let item: Image = null;
+item.scrollImage(5, 200);
+```
+
 ### Parameters
 
-* ``offset`` is a [number](/reference/types/number) that means
+* a [number](/reference/types/number) that means
   how many LEDs to scroll at a time, from right to left or
   left to right. If you use a positive number like `2`, the image
   will scroll from the right side of the screen to the left.
@@ -15,7 +20,7 @@ side to the other of the [LED screen](/device/screen).
   image. It is a square with five LEDs on a side). This is
   useful for **animation**.
 
-* ``interval (ms)`` is a [number](/reference/types/number) that means
+* a [number](/reference/types/number) that means
   how many milliseconds to wait before scrolling the amount that
   ``offset`` says. (1000 milliseconds is one second.) The bigger you
   make this number, the slower the image will scroll.

docs/reference/images/show-image.md

@@ -4,6 +4,11 @@ Show an [image](/reference/images/image) (picture) on the
 [LED screen](/device/screen).  After the micro:bit shows an image, it
 will pause for 400 milliseconds (1000 milliseconds is one second).
 
+```sig
+let item: Image = null;
+item.showImage(0);
+```
+
 ### Parameters
 
 * an [image](/reference/images/image) (picture). It is usually a square with five LEDs on a side, but it might be wider.