yogi-lines.sty

\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{yogi-lines}[2009/04/01 v0.1]
\DeclareOption{terse}{}
\DeclareOption{verbose}{}

\ProcessOptions

\newcommand\Label[1]{\label{line:#1}}
\newcommand\Begin[1]{\Label{#1:begin}}
\newcommand\End[1]{\Label{#1:end}}

\newcommand\Line[1]{Line~\ref{line:#1}}
\newcommand\lines[1]{lines~\ref{line:#1:begin}--\ref{line:#1:end}}
\newcommand\Lines[1]{Lines~\ref{line:#1:begin}--\ref{line:#1:end}}