I have a document, where I want two versions: one versions 10pt size and another version, 2 page to a side 12pt. So I currently have:
\documentclass[10pt,a4paper,oneside,openany,article]{memoir}
\newif\ifprintver
%\printvertrue
\ifprintver
\usepackage{pgfpages}
\pgfpagesuselayout{2 on 1}[a4paper,border shrink=1mm,landscape]
\fi
But I have to change the font size by hand. What can I put inside my \if
that would change the font size document wide?