added \isarantiq;

--- a/doc-src/isar.sty	Wed Oct 25 18:33:40 2000 +0200
+++ b/doc-src/isar.sty	Wed Oct 25 18:34:10 2000 +0200
@@ -21,6 +21,7 @@
 \newcommand{\isarcmd}[1]{\isarkeyword{#1}}
 \newcommand{\isartrans}[2]{#1 \mathbin{\,\to\,} #2}
 \newcommand{\isarkeep}[1]{#1 \mathbin{\,\to\,} #1}
+\newcommand{\isarantiq}{antiquotation}
 \newcommand{\isarmeth}{method}
 \newcommand{\isaratt}{attribute}