% Alter some LaTeX defaults for better treatment of figures:
    % See p.105 of "TeX Unbound" for suggested values.
    % See pp. 199-200 of Lamport's "LaTeX" book for details.
    %   General parameters, for ALL pages:
    \renewcommand{\topfraction}{0.9}	% max fraction of floats at top
    \renewcommand{\bottomfraction}{0.8}	% max fraction of floats at bottom
    %   Parameters for TEXT pages (not float pages):
    \setcounter{topnumber}{2}
    \setcounter{bottomnumber}{2}
    \setcounter{totalnumber}{2}     % 2 may work better
    \renewcommand{\dbltopfraction}{0.9}	% fit big float above 2-col. text
    \renewcommand{\textfraction}{0.07}	% allow minimal text w. figs
    %   Parameters for FLOAT pages (not text pages):
    \renewcommand{\floatpagefraction}{0.7}	% require fuller float pages
	% N.B.: floatpagefraction MUST be less than topfraction !!
    \renewcommand{\dblfloatpagefraction}{0.7}	% require fuller float pages

	% remember to use [htp] or [htpb] for placement


\newcommand{\versal}[1]{\noindent{\Huge #1\kern-.10em}}
\newcommand{\file}[1]{{\bf\ttfamily #1}}
\newcommand{\ident}[1]{{\it\ttfamily #1}}
\newcommand{\shell}[1]{{\it\ttfamily #1}}
\newcommand{\python}[1]{{\it\ttfamily #1}}
\newcommand{\ruby}[1]{{\it\ttfamily #1}}
\newcommand{\book}[2]{{\it\ttfamily #1} by {\it #2}}
\newcommand{\program}[1]{\it\ttfamily #1}

\newenvironment{aside}[1]
{
    \begin{note}
    \caption{\hfill\it #1}
    \begin{quote}
    \parindent 7.2pt
    \parskip 5pt
}
{ \end{quote} \end{note} }

\newenvironment{code}[1]
{
    \begin{source}
    \caption{\hfill\it #1}
    \sffamily\small
}
{\end{source}}

\floatstyle{ruled}
\newfloat{note}{thp}{lon}
\floatname{note}{Note}
\newfloat{source}{thp}{los}
\floatname{source}{Source}
\newcommand{\listofnotes}{\listof{note}{List Of Notes}}
\newcommand{\listofsource}{\listof{source}{List Of Source}}

\newcommand{\rfc}[2]
    {
        \begin{center}
        \ovalbox{
            \begin{minipage}{.8\textwidth}
            \begin{center}
            {\bf #1:} {\it #2}
            \end{center}
            \end{minipage}
        }
        \end{center}
    }

