various docs updates

docs/reference/logic/if.md

@@ -1,23 +1,26 @@
 # If
 
-Run code based on a condition.
-
 ### @parent blocks/language
  
 
 Conditionally run code depending on whether a [Boolean](/reference/types/boolean) condition is true or false.
 
-### Block Editor
-
-![](/static/mb/hourofcode-0.png)
+```blocks
+if(true) {
+}
+```
 
 In the Block Editor, click on the dark blue gear icon (see above) to add an *else* or *if* to the current block.
 
 ### Example: adjusting screen brightness
 
-![](/static/mb/blocks/game-library/pic0.png)
+```blocks
+if(input.lightLevel()<100){
+    led.setBrightness(255);
+}
+```
 
-If the screen [brightness](/reference/led/brightness) is `< 100`, this code sets the brightness to `255`:
+If the [light level](/input/light-level) is `< 100`, this code sets the brightness to `255`:
 
 ### Lessons