This is what Niklaus Wirth was getting at, in his "push back" on conventional class-based OOP. In Pascal, they are called "units", as oppose to "modules". In

This is what Niklaus Wirth was getting at, in his "push back" on conventional class-based OOP. In Pascal, they are called "units", as oppose to "modules". In his Modula/Oberon, they are called modules. Many of the newer languages have modules or packages, but interface well with C, thus give the benefits of what the article was referring to. To include that various newer ones don't use class-based OOP, just as C doesn't.