{Integrating \TeX\ and \PDF\ seamlessly in pdf\TeX}
{Jean-luc Doumont}
{In its ability to generate graphical elements, \TeX\ is basically
limited to horizontal and vertical black rules. Extended versions 
such as pdf\TeX\ add color options and, especially, the possibility
to draw more freely on the page by inserting raw code (\PDF\ code in the
case of pdf\TeX). Still, these two coding environments\Dash \TeX\ and
\PDF\Dash are too often regarded as disjoint. It would be nice to
integrate them seamlessly, for example, to use in \PDF\ code a color or
a dimension assigned or calculated in \TeX. This presentation points
out the challenges of such a consistent and transparent \TeX--\PDF\
integration, proposes a set of solutions, and illustrates how these
solutions help create graphs flexibly or design pages consistently on
a grid.
}