\def\red{\HINTcolor{fg{1 0 0}}}
\def\note{\HINTcolor{fg{0.5 0.5 0.5}}}
\def\endnote{\HINTendcolor}
\def\home#1{%
\HINTstartlink goto name {HINT.home}%
#1\HINTendlink}
The link \home{follow the \red Flag}
gets you to the ``home'' page.

\note Note: The link \home{follow the
\red Flag} gets you to the ``home'' page.
\endnote

\bye