Parser state
============

   The state of the parser that needs to be kept between commands are
stored in a buffer local variable.  Some global variables are
initialised from this variable when parsing starts.

 - Variable: sgml-buffer-parse-state
     The state of the parser that is kept between commands.  The value
     of this variable is of type pstate.

 - Data type: pstate
     The parser state.

 - Function: sgml-pstate-dtd PSTATE
     The document type information (dtd) for the parser.