just type stuff in and it should all work fine. This was a simple test of what is probably an old feature but whatever, I'm just having fun :P It works almost like how I remember BYOB, or Build Your Own Block, with some minor changes. Atomic blocks are just "no screen refresh", which works well enough. There are also no internal variables or ways to make custom boolean or number outputs, just standard blocks. Seeing as it uses normal global variables it's fine, but I hope we get a full official version of BYOB with the ability to make more block types. If I recall, there was a variant called Panther that did a similar thing, but no idea what ever happened to that. It was a whole bunch of Squeak programming I didn't get. When I was around during that time, I didn't use it much except to get some old and effects like blur to work. Speaking of which, I think i'll use 1.4 sometime soon and bring those old blocks back 8)
tl;dr The BYOB thing is cool now and I'm old
