added read_token -- with optional YXML encoding of position;
tuned parse operations: print position instead of echoing input (now encoded!);
do not export obsolete read operation;
%% $Id$
\usepackage{ifthen}
\newcommand{\indexdef}[3]%
{\ifthenelse{\equal{}{#1}}{\index{#3 (#2)|bold}}{\index{#3 (#1\ #2)|bold}}}
\newcommand{\indexref}[3]{\ifthenelse{\equal{}{#1}}{\index{#3 (#2)}}{\index{#3 (#1\ #2)}}}
\newcommand{\indexoutertoken}[1]{\indexdef{}{syntax}{#1}}
\newcommand{\indexouternonterm}[1]{\indexdef{}{syntax}{#1}}
\newcommand{\indexisarelem}[1]{\indexdef{}{element}{#1}}
\newcommand{\isasymAND}{\isakeyword{and}}
\newcommand{\isasymIS}{\isakeyword{is}}
\newcommand{\isasymWHERE}{\isakeyword{where}}
\newcommand{\isasymBEGIN}{\isakeyword{begin}}
\newcommand{\isasymIMPORTS}{\isakeyword{imports}}
\newcommand{\isasymIN}{\isakeyword{in}}
\newcommand{\isasymSTRUCTURE}{\isakeyword{structure}}
\newcommand{\isartrans}[2]{#1 \mathbin{\,\to\,} #2}
\newcommand{\isarkeep}[1]{#1 \mathbin{\,\to\,} #1}
\newcommand{\isarantiq}{antiquotation}
\newcommand{\isarmeth}{method}
\newcommand{\isaratt}{attribute}