ELI5: Explain Like I'm 5

Modular Syntax Definition Formalism

Okay, so imagine you're building a big toy castle out of legos. You have all the different pieces of legos you need to make the castle, but you need to know how to put them all together in the right way.

Modular syntax definition formalism is like a set of instructions that tells you how to put all the different "pieces" of a programming language together. It helps you know what words and symbols mean and how they should be used in sentences that the computer will understand.

Like how you need to put the right size and shape lego pieces together in a certain order to make a castle, you need to use the right words and symbols in the right order to make your computer program work. Modular syntax definition formalism helps you make sure you're doing it all correctly!