From f4dbd4d3e80432cf1bd41d7f423580da153f11b8 Mon Sep 17 00:00:00 2001
From: Adam Chlipala <adam@chlipala.net>
Date: Tue, 16 Apr 2013 10:55:48 -0400
Subject: Basis.tryRpc

---
 doc/manual.tex | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'doc/manual.tex')

diff --git a/doc/manual.tex b/doc/manual.tex
index a402c6b6..0af87d8e 100644
--- a/doc/manual.tex
+++ b/doc/manual.tex
@@ -2157,6 +2157,12 @@ $$\begin{array}{l}
   \mt{val} \; \mt{rpc} : \mt{t} ::: \mt{Type} \to \mt{transaction} \; \mt{t} \to \mt{transaction} \; \mt{t}
 \end{array}$$
 
+There is an alternate form that uses $\mt{None}$ to indicate that an error occurred during RPC processing, rather than raising an exception to abort this branch of control flow.
+
+$$\begin{array}{l}
+  \mt{val} \; \mt{tryRpc} : \mt{t} ::: \mt{Type} \to \mt{transaction} \; \mt{t} \to \mt{transaction} \; (\mt{option} \; \mt{t})
+\end{array}$$
+
 \subsubsection{Asynchronous Message-Passing}
 
 To support asynchronous, ``server push'' delivery of messages to clients, any client that might need to receive an asynchronous message is assigned a unique ID.  These IDs may be retrieved both on the client and on the server, during execution of code related to a client.
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