-\newcommand\xcomment[1]{}
-\newcommand\URI[1]{\texttt{<#1>}}
-
-\newcommand\MathQL{\textsc{mathql-1}}
-\newcommand\RDF{\textsc{rdf}}
-\newcommand\RDFS{\textsc{rdf schema}}
-\newcommand\HELM{\textsc{helm}}
-\newcommand\POSIX{\textsc{posix}}
-\newcommand\XML{\textsc{xml}}
-\newcommand\CAML{\textsc{caml}}
-\newcommand\SQL{\textsc{sql}}
-\newcommand\MySQL{\textsc{mysql}}
-\newcommand\PostgreSQL{\textsc{postgresql}}
-\newcommand\Galax{\textsc{galax}}
-\newcommand\XQuery{\textsc{xquery}}
-