-dit(bf(RERR_SYNTAX 1)) syntax or usage error
-dit(bf(RERR_PROTOCOL 2)) protocol incompatibility
-dit(bf(RERR_FILESELECT 3)) errors selecting input/output files, dirs
-dit(bf(RERR_UNSUPPORTED 4)) requested action not supported
-dit(bf(RERR_SOCKETIO 10)) error in socket IO
-dit(bf(RERR_FILEIO 11)) error in file IO
-dit(bf(RERR_STREAMIO 12)) error in rsync protocol data stream
-dit(bf(RERR_MESSAGEIO 13)) errors with program diagnostics
-dit(bf(RERR_IPC 14)) error in IPC code
-dit(bf(RERR_SIGNAL 20)) status returned when sent SIGUSR1, SIGINT
-dit(bf(RERR_WAITCHILD 21)) some error returned by waitpid()
-dit(bf(RERR_MALLOC 22)) error allocating core memory buffers
-dit(bf(RERR_TIMEOUT 30)) timeout in data send/receive
+dit(bf(RERR_SYNTAX 1)) Syntax or usage error
+dit(bf(RERR_PROTOCOL 2)) Protocol incompatibility
+dit(bf(RERR_FILESELECT 3)) Errors selecting input/output files, dirs
+
+dit(bf(RERR_UNSUPPORTED 4)) Requested action not supported: an attempt
+was made to manipulate 64-bit files on a platform that cannot support
+them; or an option was speciifed that is supported by the client and
+not by the server.
+
+dit(bf(RERR_SOCKETIO 10)) Error in socket IO
+dit(bf(RERR_FILEIO 11)) Error in file IO
+dit(bf(RERR_STREAMIO 12)) Error in rsync protocol data stream
+dit(bf(RERR_MESSAGEIO 13)) Errors with program diagnostics
+dit(bf(RERR_IPC 14)) Error in IPC code
+dit(bf(RERR_SIGNAL 20)) Received SIGUSR1 or SIGINT
+dit(bf(RERR_WAITCHILD 21)) Some error returned by waitpid()
+dit(bf(RERR_MALLOC 22)) Error allocating core memory buffers
+dit(bf(RERR_TIMEOUT 30)) Timeout in data send/receive