# Why is LaTeX called a typesetting “system”?

Reading about TeX/LaTeX online, I'm a little confused as to what it is- isn't it a language? Wikipedia calls is it a typesetting system- and to make matters worse, if I want to use LaTeX, I need to download something like MikTeX which is also called a typesetting system. Why isn't LaTeX just called a programming language, and why isn't there just one installer to download, like with Python?

• – Alan Munn Jan 4 '15 at 20:11
• The second says that TeX is a program- I don't understand this. Isn't that like calling python a program? – user41692 Jan 4 '15 at 20:18
• `python` is a program, isn't it? It's the language interpreter, and the language is called Python. `:)` – Paulo Cereda Jan 4 '15 at 20:21
• Oh, is that what they mean when they says TeX is a program? – user41692 Jan 4 '15 at 20:22
• `tex` is a program, TeX is a language. When you have a support ecosystem around all these things, you get a system. `:)` – Paulo Cereda Jan 4 '15 at 20:23