DISCLAIMER: I do NOT condone making projects as stupid as this one :)
this is the most unacceptable, utterly horrifying, and undebatably ridiculous set of blocks imaginable. but: you MUST go in order in clicking each block. Have fun!
Dev mode has features that have been in Snap! from the beginning, but are meant for developers rather than users. The main one is access to the Morphic controls for all the visual elements on the screen.
The dev version, by contrast, has features that Jens has just implemented, and isn’t committed to keeping in the next official Snap! release, but are generally intended for users, not only for developers.