@|
: Literal vertical bar, or optional line break
In the TeX (documentation) part of a section, @|
inserts a
vertical bar. Here's a LaTeX example:
\begin{verbatim} The constructions @|x@| and |x| are very different. \end{verbatim}
You might wish to try this out to see what FWEAVE produces.
In a code part, @|
inserts an optional line break in an expression.