\usepackage{relsize,setspace}  % used by latex(describe( ))
\usepackage{needspace}
\usepackage{longtable,epic}    % used by print(..., latex=TRUE)
\usepackage{url}               % used in bibliography
\usepackage{biblatex}          % assumes biber installed
% Need \addbibresource{/..../..bib}

% Cut out extra vertical space around verbatim and tabular created by latex.describe
\usepackage{etoolbox}
\makeatletter
%\preto{\@verbatim}{\topsep=-1.7pt \partopsep=1pt} % was topsep -1.5pt -1pt
%\preto{\@tabular}{\parskip=0pt \parsep=0pt}
\preto{\@verbatim}{\topsep=-1.4pt \partopsep=0pt} % was topsep -1.5pt -1pt
\preto{\@tabular}{\parskip=2pt \parsep=0pt}
\makeatother
% Also try:  (see http://tex.stackexchange.com/questions/47910/reduce-space-before-and-after-tabular-environment/49709#49709)
% \setlength{\textfloatsep}{0.1cm}
% \addtolength{\parskip}{-0.5mm}
% %\usepackage[superscript,nomove]{cite} % uses superscripts with \cite
% %\newcommand{\citei}[1]{{\smaller{[\citen{#1}]}}}  % for citing in a
% sentence not superscripts

\usepackage{Sweavel}           % for knitr

\usepackage{lscape}            % for landscape mode tables
\textwidth 6.75in              % set dimensions before fancyhdr 
\textheight 9.25in
\topmargin -.875in
\oddsidemargin -.125in
\evensidemargin -.125in
\usepackage{fancyhdr} % this and next line are for fancy headers/footers
\pagestyle{fancy}
\newcommand{\code}[1]{{\smaller\texttt{#1}}}
\newcommand{\R}{{\normalfont\textsf{R}}{}}

\usepackage{tcolorbox}
\definecolor{lemonchiffon}{rgb}{1.0, 0.98, 0.8}
\newtcbox{\ovbox}{colback=lemonchiffon,boxrule=0pt,arc=5pt,
  boxsep=0pt,left=3pt,right=3pt,top=3pt,bottom=3pt}

\newcommand{\com}[2]{\centerline{\ovbox{\parbox{.9\textwidth}{\smaller#2}}}%
\marginpar{\textcolor{blue}{\smaller[3]#1}}}
\newcommand{\snote}[1]{\marginpar{\textcolor{blue}{\smaller[3]#1}}}
\newcommand{\ignorecom}{%
 \renewcommand{\com}[2]{}%
 \renewcommand{\snote}[1]{}}

\endinput

sudo cp ~/doc/latex/texinput/spaper.sty /usr/share/R/share/texmf/.
sudo mktexlsr

To update on wiki:
cp -p spaper.sty /tmp
browser http://biostat.mc.vanderbilt.edu/wiki/bin/attach/Main/LaTeXCollab?filename=spaper.sty;revInfo=1