After compiling your code, you can add a comment to help others understand it.
(1) Right-click the block on which you want to add a comment and choose Add Comment from the shortcut menu that appears.
(2) Add a comment. You can click the black triangle in the upper left corner to expand or collapse the comment.
If your program contains multiple columns of code, you can use the code sorting function.
(1) Right-click the blank space and choose Clean up Blocks from the shortcut menu that appears.
(2) The blocks are sorted out.