Block shapes
Hat, stack, reporter and boolean: each shape fits somewhere.
- Hat (rounded top): starts a script, like "when green flag clicked".
- Stack (puzzle piece): does an action and snaps above/below others.
- Reporter (round ends): gives a number or text; goes inside round slots.
- Boolean (pointy ends): true or false; goes in "if", "repeat until" and "wait until".
- C block (like "repeat" and "forever"): holds other blocks inside.