$display .= "<tr><td><p><font size=-1>Markup</p></td><td><p><input type=text name=markup size=25 maxlength=100 value=\"$markup\"></p></td></tr>\n";
$display .= "<tr><td><p><font size=-1>Price</p></td><td><p><input type=text name=price size=25 maxlength=100 value=\"$price\"></p></td></tr>\n";

...and so on for dozens of lines