How is possible to set interline inside this block of code?

Question

Have this code that generate an aside section:

\RequirePackage[absolute,overlay]{textpos}
\setlength{\TPHorizModule}{1cm}
\setlength{\TPVertModule}{1cm}
\newenvironment{aside}{%
  \let\oldsection\section
  \renewcommand{\section}[1]{
    \par\vspace{\baselineskip}{\Large\headingfont\color{headercolor} ##1}
  }
  \begin{textblock}{3.6}(1.5, 4.33)
  \begin{flushright}
  \obeycr
}{%
  \restorecr
  \end{flushright}
  \end{textblock}
  \let\section\oldsection
}

Works well but i want to increase the interline in the text inside aside section...

Have tried to insert after \obeycr command this line:

\par\vspace{.25\parskip}%

but change the interline between aside sections, not on text lines inside the sections.

This is the .tex source

\begin{aside}
  \section{info}
    Homer J. Simpson
    123 Fake Street
    Springfield, NJ 08105-442
    555-966-5786
    \href{mailto:homer@simpson.com}{homer@simpson.com}
\end{aside}

I need to increase interline between andress and phone number, and from phone number and email link.

Answer 1

TeX can't know that you want a space before telephone numbers or email addresses, nor it can know that some characters form a telephone number or an email address. So either you use explicit spacing commands or mark the input in some way:

\documentclass[a4paper]{article}
\usepackage{color}
\usepackage[absolute,overlay]{textpos}
\usepackage{hyperref}

\setlength{\TPHorizModule}{1cm}
\setlength{\TPVertModule}{1cm}
\newenvironment{aside}{%
  \begin{textblock}{3.6}(1.5, 4.33)
  \begin{flushright}
  \obeycr
}{%
  \restorecr
  \end{flushright}%
  \end{textblock}%
}
\providecommand\headingfont{} % I don't know what you want to define it
\definecolor{headercolor}{rgb}{0,0,1} % I don't know what's your favorite color

\newcommand{\tel}[1]{\addvspace{1ex}#1}
\newcommand{\email}[1]{\addvspace{1ex}\href{mailto:#1}{#1}}

\newcommand{\asidesection}[1]{%
  \par\vspace{\baselineskip}{\Large\headingfont\color{headercolor} #1}%
}


\begin{document}
\begin{aside}
  \asidesection{info}
    Homer J. Simpson
    123 Fake Street
    Springfield, NJ 08105-442
    \tel{555-966-5786}
    \email{homer@simpson.com}
\end{aside}
\end{document}

Notice that I've used a different command for the title, since I would never redefine \section for that purpose. However this is a matter of tastes. Notice that \let\oldsection\section and \let\section\oldsection are superfluous, as your redefinition takes place inside an environment which forms a group.

If your aside environments all have a title, you can use a different strategy:

\newenvironment{aside}[1]{%
  \begin{textblock}{3.6}(1.5, 4.33)
  \begin{flushright}
  \obeycr
  \par\vspace{\baselineskip}{\Large\headingfont\color{headercolor}#1}%
}{%
  \restorecr
  \end{flushright}%
  \end{textblock}%
}

and your environment would be

\begin{aside}{info}
    Homer J. Simpson
    123 Fake Street
    Springfield, NJ 08105-442
    \tel{555-966-5786}
    \email{homer@simpson.com}
\end{aside}

Answer 2

I believe that you can do so manually, if that's an acceptable option:

Where \par\medskip could be replaced by \par\smallskip or \\[3pt] etc.

\documentclass{article}
\usepackage[absolute,overlay]{textpos}
\usepackage{hyperref}
\usepackage{xcolor}
\setlength{\TPHorizModule}{1cm}
\setlength{\TPVertModule}{1cm}
\newenvironment{aside}{%
  \let\oldsection\section
  \renewcommand{\section}[1]{
    \par\vspace{\baselineskip}{\Large\color{blue} ##1}
  }
  \begin{textblock}{3.6}(1.5, 4.33)
  \begin{flushright}
}{%
  \end{flushright}
  \end{textblock}
  \let\section\oldsection
}

\begin{document}

\begin{aside}
  \section{info}\par
    Homer J. Simpson\par
    123 Fake Street\par
    Springfield, NJ 08105-442\par\medskip
    555-966-5786\par\medskip
    \href{mailto:homer@simpson.com}{homer@simpson.com}
\end{aside}

\end{document}