deletions | additions       diff --git a/header.tex b/header.tex  index 28e84ea..b886844 100644  --- a/header.tex  +++ b/header.tex 
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\newcommand{\feval}{{\tt feval}}  \newcommand{\fbase}{\textsf{f}}  \newcommand{\fvariant}{\textsf{f'}}  \newcommand{\fosrfrom}{\textsf{f$_{\textsf{OSRfrom}}$}}  \newcommand{\fosrto}{\textsf{f$_{\textsf{OSRto}}$}} \newcommand{\fosrfrom}{{\textsf{f$_{\textsf{OSRfrom}}$}}}  \newcommand{\fosrto}{{\textsf{f$_{\textsf{OSRto}}$}}}  % theorems  \newtheorem{theorem}{Theorem} 
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