# How to format a subject line with indent?

I'd like a subject like similar to the following but I can't figure out the indentation:

Re:    Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do
eiusmod tempor incididunt ut labore et dolore magna.


It looks like you're setting a letter. You can just put the reference text inside a fixed-width \paragraph box that is [t]op-aligned:

\documentclass{article}

\usepackage{lipsum}

\setlength{\parindent}{0pt}

\begin{document}

\bigskip

\makebox[30pt][l]{Re:}%
\parbox[t]{\dimexpr\linewidth-30pt}{\strut%
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do
eiusmod tempor incididunt ut labore et dolore magna.%
}

\bigskip

\lipsum[1]

\end{document}


Re: is set left-aligned inside a fixed-width \makebox of width 30pt. This allows one to calculate the exact width required for the \parbox: \linewidth-30pt and make it fully-justified with the other text components on the page.