ELI5: Explain Like I'm 5

ISO 4

ISO 4 is a special way to write the titles of books and articles so that everyone can understand them easily. It's like a secret code that scientists and researchers use to make sure they're all using the same words when they talk about their work.

Basically, when someone writes a book or an article, they usually give it a long, fancy title that has lots of big words in it. But these titles can be hard to understand, especially if you're not an expert in the subject area. So, ISO 4 comes in to make things easier.

With ISO 4, people take the important words from a book or article's title and shorten them down into a simple, easy-to-read formula. This formula is called the "abbreviation" of the title. For example, if the title of a book is "The Science of Space Travel," the ISO 4 abbreviation might be "Sci. Space Travel."

These abbreviations are used all over the world by scientists and researchers to talk about the same books and articles without confusion. So, ISO 4 might seem like a small thing, but it's actually really important for making sure that we can all communicate clearly and effectively.