% Correction for A4 paper (297x210mm) instead of the american 11x8.5in.         
% To be called, for example, in this way:                                       
%                 \documentstyle[12pt,A4]{article}                              
\addtolength{\textheight}{154.6pt}                                              
\addtolength{\textwidth}{100pt}                                                 
\addtolength{\topmargin}{-92pt}                                                 
\addtolength{\topmargin}{0.5cm}                                                 
\addtolength{\oddsidemargin}{-52pt}                                             
\addtolength{\oddsidemargin}{-0.6cm}                                            
\addtolength{\evensidemargin}{-52pt}                                            
\addtolength{\evensidemargin}{-0.6cm}