Exactly...
So something like as adding some unnecessary things, but I'm not complaining 
Btw, you can put input lists as well!
I think you put a ring in where a list should be.
Well... Yes, but check again, it's ringed... It should not error
Because I THINK They Wanna Fix Bugs And Make New Stuff
Anyone using a version of Snap! before 7.3.0 should know that any projects saved in 7.3.0 will turn any blocks with new syntax into undefined!. E.g. a model with 2+2 will not run in earlier versions.
Yeah, that's why while 7.3 was the dev version, it put up a window warning users not to save projects. Our theory is that once your browser cache is caught up with 7.3, you're never going to go backward. There can be a problem only if you use two computers and one of them hasn't caught up.
How do you make a block red?
He's using a custom category.