{Abdelouahad Bayar}
{The interaction of \LaTeX\ and PostScript Type~3: The~underlying principles of \code{dynMath}}
{The \cs{special} command allows different ways of interacting between \LaTeX\
and PostScript. The use of PostScript literal options such as
\cs{special}\tubbraced{!~\meta{PostScript code}} and
\cs{special}\tubbraced{"~\meta{PostScript code}} are the underlying
means to implement the support for dynamic mathematical symbols in
\code{dynMath} package. Thanks to these facilities, a PostScript
Type~3 font is accessed and used inside \LaTeX\ to draw mathematical
symbols able to vary in size with respect to the context. In this talk,
the basics of the \code{dynMath} implementation and functionality based on
PostScript Type~3 fonts are presented. \preprint}