{
:html3 => "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2//EN\">\n",
:html4_transitional =>
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" " <<
"\"http://www.w3.org/TR/html4/loose.dtd\">\n",
:html4_strict =>
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\" " <<
"\"http://www.w3.org/TR/html4/strict.dtd\">\n",
:html4_frameset =>
"<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01 Frameset//EN\" " <<
"\"http://www.w3.org/TR/html4/frameset.dtd\">\n",
:xhtml1_transitional =>
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" " <<
"\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n",
:xhtml1_strict =>
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" " <<
"\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n",
:xhtml1_frameset =>
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Frameset//EN\" " <<
"\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd\">\n",
:xhtml2 => "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n"
}