When Hat Block Tutorial
You can just click the arrows or use left and right arrow keys to change scenes.
('When %b is true' #W #-)
self evaluateCondition ifTrue: [self start]
The when hat block will only work if your scripts pane is set to the sprite which has the block.
The when hat block will not work if you are in presentation mode
This block will not work online if you upload it
This block will be obsolete in Experimental viewer
If somone uses this block in a project and you download the project they made it in, the block will work!
For further bug fixes go to: http://scratch.mit.edu/forums/viewtopic.php?pid=655819#p655819