Sub Articulo 109.1

Here is an environment to add an em-dash (`---' in LaTeX source) to th
 e
beginning of every PARAGRAPH.  I don't know how to do every line, but 
 I
think you want every paragraph instead of what you asked for.  It's no
 t
very TeX-like to have lines be significant in this way in a source fil
 e.
I'm not sure whether you want the usual paragraph indentation before t
 he
em-dash.  Uncomment the \setlength command and specify the space you
want before the dash there, if you want to change it from the norm for
the surrounding document.
\newenvironment{portugesedialogue} {%
  % \setlength\parindent{0pt}
  \everypar={---}%
  }{}