Author: max
Description:
Many aspects of TeX rendering depend on local traditions. The most essential are:
- National characters in formulae and indices cannot be entered.
- The decimal separator is a comma in many countries (ru, fr, de and others). TeX by default treats a comma as a list separator, adding a very large skip after in: compare <math>3.14\,\!</math> and <math>3,14\,\!</math>. Actually, we can write <math>3{,}14</math> but it's a dirty hack.
- Some functions have national variants of designation, for example, tg instead of tan. To avoid clumsy <code>\mathop</code> construction, we need a method for entering such names.
A reasonable way for fighting with all these inconveniences is to allow national versions having their own TeX macros in preamble. There exists "babel" in LaTeX, why not in texvc?