https://snap.berkeley.edu/project?username=rkwjs2005&projectname=4.1%20List%20Basics
4.1 List Basics by rkwjs2005 | Snap! Build Your Own Blocks
The Snap! Community. Snap! is a blocks-based programming language built by UC Berkeley and used by hundreds of thousands of programmers around the world.
build your ownlistbasics