deletions | additions       diff --git a/preamble.tex b/preamble.tex  index 236293a..0aac49c 100644  --- a/preamble.tex  +++ b/preamble.tex 
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\usepackage[a4paper]{geometry}  \geometry{verbose,tmargin=2cm,bmargin=2cm,lmargin=1cm,rmargin=1cm,headheight=1cm,headsep=1cm,footskip=1cm}  \newcommand{\Msun}{~M_\odot}   \newcommand{\kms}{\rm ~km~s^{-1}}   \newcommand{\ml}{~\Msun ~\rm yr^{-1}}   \newcommand{\ab}{\hspace{-1.5em}}   \def\sun{_\odot}   \usepackage{prettyref}  \usepackage{float}  \usepackage{rotfloat}