Automatic paper description

commands.tex

% Simply this:

% write \contents{whatever} to add that to the description and write \listofstructure{} to show the description. That's everything.

\newcommand{\listofstructure}{\InputIfFileExists{toc.toc}{}}

\newcommand{\contents}[1]{\immediate\write\delayedtext{In section\unexpanded\expandafter{~}\arabic{section} #1. }}

\AtBeginDocument{\newwrite\delayedtext
\immediate\openout\delayedtext=toc.toc.aux
}
\AtEndDocument{
\immediate\closeout\delayedtext

\newwrite\delayedtext  % open the file to write to
\immediate\openout\delayedtext=toc.toc

\newread\prevtext
\openin\prevtext=toc.toc.aux

\begingroup\endlinechar=-1
\loop\unless\ifeof\prevtext
  \read\prevtext to\fileline  
  \immediate\write\delayedtext{\unexpanded\expandafter{\fileline}} 
\repeat
\endgroup
\immediate\closein\prevtext
\immediate\closeout\delayedtext
}