--- a/doc-src/IsarRef/isar-ref.tex Mon Feb 12 20:43:12 2001 +0100
+++ b/doc-src/IsarRef/isar-ref.tex Mon Feb 12 20:44:02 2001 +0100
@@ -18,6 +18,7 @@
\newcommand{\isasymrightharpoonup}{\isamath{\rightharpoonup}}
\newcommand{\isasymrightleftharpoons}{\isamath{\rightleftharpoons}}
\newcommand{\isasymequiv}{\isamath{\equiv}}
+\newcommand{\isasymsubseteq}{\isamath{\subseteq}}
\railterm{percent,ppercent,underscore,lbrace,rbrace,atsign}
\railterm{ident,longident,symident,var,textvar,typefree,typevar,nat,string,verbatim,keyword}