When you're learning a new programming language, something like this is usually the first working program you write.
PRINT *, "Hello World!"
If you don't recognize Fortran IV, I can't blame you but that's approximately where I started.
"Hello World" programs are a near-universal fixture of introductions to programming languages. They serve to get the new user of the language used to the basic mechanics of preparing source code, compiling, and executing a working program. All while not overwhelming the student (or hobbyist) with too much intricacy.