I have question about LaTeX structure and how LaTeX works? Is it just a set of macros for TeX? What happens, when I call
latex somefile.tex? Does
latex just includes
somefile into a file, which contain basic LaTeX macros and calls
I've looked at
latex.ltx. There are some commands, which are neither defined nor basic TeX commands. Does LaTeX introduce new fundamental commands, which TeX haven't?