unhandled element <!DOCTYPE reference PUBLIC "-//OASIS//DTD DITA Reference//EN" "reference.dtd"> refentry must have an id attribute! refentry refnamediv/refpurpose Expected refsynopsisdiv to start with cmdsynopsis No title element supported in refsynopsisdiv refsynopsisdiv Synopsis refsect1 requires title refsect1 refsect2 requires title refsect2 refsect2/title para variablelist varlistentry term listitem itemizedlist listitem cmdsynopsis command command command arg arg[opt,norepeat] optional arg[req,norepeat] required Expected only text under arg[choice=plain] arg[plain] replaceable replaceable replaceable option/replaceable group option option literal filename text() [@id= ] [] error: :