Everybody knows the infamous programming cheatsheets. They contain condensed information about a specific topic of a programming language. They are mostly either images or sometimes short pdf.
They are easy to study, easy to share. But, they can become obsolete, you cannot copy-paste out of it, You cannot modify it
I create my own cheatsheets with CNP. They are living documents, being constantly improved. Are they as fancy as carefully crafted images? No. But, I can add code, formatted text & images. Sharing is just copying a link.
Most important, I can easily find the cheatsheet itself, or even parts of it, via search of keywords which is impossible for images.
(And, of course, I can copy the hell out of it.)