Provides XML doctypes as strings.
Exports strings corresponding to standard XML (XHTML, HTML) doctypes.
#;1> (use doctype) #;2> (print doctype:xhtml-1.0-strict) <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
Public domain.