<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14pt"><div>Here is the updated version of my previous e-mail about the red dot.</div><div><br></div><div style="background-color: transparent;">\documentclass[pstricks,border=12pt,12pt]{standalone}</div><div style="background-color: transparent;">\usepackage{pstricks-add}</div><div style="background-color: transparent;">\begin{document}</div><div style="background-color: transparent;">\begin{pspicture}[showgrid](8,6)</div><div style="background-color: transparent;"><span class="Apple-tab-span" style="white-space:pre"> </span>\pnodes(5,4){O}(3,1){A}(7,1){B}</div><div style="background-color: transparent;"><span class="Apple-tab-span" style="white-space:pre"> </span>\pscircle(O){1}</div><div style="background-color: transparent;"><span class="Apple-tab-span" style="white-space:pre">
</span>\psCircleTangents(A)(O){1}</div><div style="background-color: transparent;"><span class="Apple-tab-span" style="white-space:pre"> </span>\psline(A)(CircleT1)</div><div style="background-color: transparent;"><span class="Apple-tab-span" style="white-space:pre"> </span>\psline(A)(CircleT2)</div><div style="background-color: transparent;">\end{pspicture}</div><div style="background-color: transparent;">\end{document}</div><div style="background-color: transparent;"><br></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 19px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal;"><br></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 19px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal;">Best regards,</div><div style="background-color: transparent; color: rgb(0, 0, 0);
font-size: 19px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal;"><br></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 19px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal;">Stiff Jokes</div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 19px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal;"><br></div><div style="background-color: transparent;">http://tex.stackexchange.com/users/19356/<br></div></div></body></html>