%% 
%%  Example 01-08-2 
%%  Copyright (C) 2017 Herbert Voss
%% 
%% ==== 
% Show page(s) 1
%% 
%% 
\documentclass[]{screxa}
\pagestyle{empty}
\setlength\textwidth{110.31393pt}

%StartShownPreambleCommands

%StopShownPreambleCommands
\begin{document}
$\bigg(\displaystyle\frac{1}{3}\bigg|\frac{3}{4}\bigg)$

$\bigg(\displaystyle\frac{1}{3}\biggm|\frac{3}{4}\bigg)$
\end{document}
