Changes

As its name suggests, luaTeX adds lua, a programming language, to TeX, the typesetter. I cannot overemphasize the significance of being able This allows us to program TeX in a high-level programming language. For example, consider a TeX macro that divides two numbers. Such a macro is provided by the <tt>fp</tt> package and also by <tt>pgfmath</tt> library of the <tt>TikZ</tt> package. The following comment is from the <tt>fp</tt> package