ks-transaction added.

scrbl/keystore.scrbl

@@ -121,6 +121,14 @@ Returns raw key-value rows in the form:
 ]
 }
 
+
+@defform[(ks-transaction [ks keystore?] b1 ...)]{
+
+Puts b1 ... in a "BEGIN/COMMIT" transaction.
+It uses with-handlers exn?, so if you raise an exception,
+it will do a "BEGIN/ROLLBACK" abd re-raise the exception. 
+}
+
 @section{Examples}
 
 @subsection{Basic Usage}