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--- at:tutorial:distribution [2009/01/29 10:30] – elisag
+++ at:tutorial:distribution [2009/01/29 10:31] – elisag
@@ Line 202: / Line 202: @@
 Single-call leases are useful for objects adhering to a single call pattern, such as callback objects. Callback objects are often used in asynchronous message passing schemes in order for remote object to be able to return values. These callback objects are typically remotely accessed only once by remote objects with the computed return value. In AmbientTalk, futures serves as an implicit callback.
-We have integrated leasing into futures by parameter-passing a future attached to an asynchronous message via a singe-call lease which either expires due to a timeout or upon the reception of the computed return value. The timeout for the implicit single-call lease on a future can be set by annotating the asynchronous message with a @Due annotation as follows:
+We have integrated leasing into futures by parameter-passing a future attached to an asynchronous message via a singe-call lease which either expires due to a timeout or upon the reception of the computed return value. The timeout for the implicit single-call lease on a future can be set by annotating the asynchronous message with a ''@Due'' annotation as follows:
 <code>
@@ Line 213: / Line 213: @@
 </code>
-If the future is resolved, the session variable stores a leased object reference to the remote session object.  A TimeoutException is raised when the future’s lease expires, i.e. when the reception of the computed return value is not received before the lease time elapsed.
+If the future is resolved, the session variable stores a leased object reference to the remote session object.  A ''TimeoutException'' is raised when the future’s lease expires, i.e. when the reception of the computed return value is not received before the lease time elapsed.
 <note>
-Note that specifying a catch: block for the TimeoutException is equivalent to installing a when:expired: observer on the future’s (server-side) lease.
+Note that specifying a ''catch:'' block for the ''TimeoutException'' is equivalent to installing a ''when:expired:'' observer on the future’s (server-side) lease.
 </note>