fixing references / snippets

cleanup "snippets" compilation state

docs/lessons/bop-it/activity.md

@@ -6,43 +6,43 @@ a game similar to "Simon Says" with the BBC micro:bit.
 
 Complete the following guided tutorial. Your code should look like this:
 
-```blocks
-newAction() // ***
+```typescript
+let action  = 0;
+function newAction() {}
 input.onButtonPressed(Button.A, () => {
     if (action == 0) {
-        game.addScore(1) // ***
-        newAction() // ***
+        game.addScore(1);
+        newAction();
     }
-}) // ***
+})
 input.onLogoDown(() => {
     if (action == 1) {
-        game.addScore(1) // ***
-        newAction() 
+        game.addScore(1);
+        newAction();
     }
 }) 
 input.onGesture(Gesture.Shake, () => {
     if (action == 2) {
-        game.addScore(1)
-        newAction()
+        game.addScore(1);
+        newAction();
     }
 }) 
 input.onButtonPressed(Button.B, () => {
-    basic.showNumber(game.score(), 150) // ***
-    basic.pause(2000) // ***
-    newAction() // ***
+    basic.showNumber(game.score(), 150);
+    basic.pause(2000);
+    newAction();
 }) 
 ```
 
 ### Challenge 1
 
-Now let's add some more types of instructions for the player to follow. Let's add `PRESS PIN 0`. Change the global variable `action` to `math->random(4)` so that we can add a new **IF** statement that checks if `action=3`. If it does, display instructions to press pin 0.
+Now let's add some more types of instructions for the player to follow. Let's add `PRESS PIN 0`. 
+Change the global variable `action` to `math->random(4)` so that we can add a new **IF** statement that checks if `action=3`. If it does, display instructions to press pin 0.
 
-```blocks
-/**
- * {highlight}
- */
+```typescript
+let action  = 0;
 export function newAction() {
-    action = Math.random(4) // ***
+    action = Math.random(4)
     if (action == 0) {
         basic.showString("PUSH A", 150) // ***
     }
@@ -62,19 +62,22 @@ export function newAction() {
 
 Now let's implement `PRESS PIN 0` in the main. Create a condition of `input->on pin pressed("P0")` that will add one to the score and calls the method `new action`.
 
-```blocks
-// **. . .**
+```typescript
+let action  = 0;
+export function newAction() {
+    // ...
+}
 input.onButtonPressed(Button.B, () => {
-    basic.showNumber(game.score(), 150) // ***
-    basic.pause(2000) // ***
-    newAction() // ***
-}) // ***
+    basic.showNumber(game.score(), 150)
+    basic.pause(2000)
+    newAction()
+})
 input.onPinPressed(TouchPin.P0, () => {
     if (action == 3) {
-        game.addScore(1) // ***
-        newAction() // ***
+        game.addScore(1)
+        newAction()
     }
-}) // ***
+})
 ```
 
 ### Challenge 3