One advantage of LaTeX over the other TeX-flavors is that it provides an automatic numbering of sections, theorems, equations etc., together with an easy way to refer to these numbers.
The value of a counter can be changed with a command of the type:
\setcounter{equation}{0}
This is a brief list of recommendations for authors of scientific papers who make their work available online. It focuses in particular on producing high-quality PDF files with LaTeX and covers some other technical and typographic pitfalls.