The grey caution block is a conditional block (IF). It can be used to prevent Awbie from making mistakes. For example: WALK RIGHT 5 IF----------------------WALK UP 3
If any step of WALK RIGHT 5 will cause Awbie to make a mistake like running into a tree or jumping into water, Awbie will WALK UP THREE. Otherwise, Awbie will continue walking right.
Please note that the Caution Block is no longer required to play the game and does not come with the new Coding Family Bundle or Coding Starter Kit; it is only included in the classic solo Coding Awbie Set.
For more information, see our PDF guide to Coding Awbie.