Index: jsmath/web/extensions/AMSsymbols.js
===================================================================
diff -u -r18ca7a80355adaa156105d80bd5a732e4e1e0d91 -rd1ff30c9bf023d99b27206b98b13ae0180f3de2b
--- jsmath/web/extensions/AMSsymbols.js	(.../AMSsymbols.js)	(revision 18ca7a80355adaa156105d80bd5a732e4e1e0d91)
+++ jsmath/web/extensions/AMSsymbols.js	(.../AMSsymbols.js)	(revision d1ff30c9bf023d99b27206b98b13ae0180f3de2b)
@@ -285,5 +285,6 @@
 });
 
 jsMath.Macro('Bbb','{\\msbm #1}',1);
+jsMath.Macro('mathbb','{\\msbm #1}',1);
 jsMath.Extension.Font('msbm');
 jsMath.Extension.Font('msam');