Clarify documentation slightly

I'm not sure every nbd user understands what an 'elevator' is (beyond
"device that makes people go up and down"); make it slightly more
obvious how the pieces fit together.

diff --git a/man/nbd-server.5.in.sgml b/man/nbd-server.5.in.sgml
index 2930c2c..8f06f96 100644 (file)
--- a/man/nbd-server.5.in.sgml
+++ b/man/nbd-server.5.in.sgml
@@ -448,7 +448,7 @@ manpage.1: manpage.sgml
          <para>Optional; boolean.</para>
          <para>When this option is enabled,
            <command>nbd-server</command> will inform the client that 
-           it would prefer it to send requests in elevator order, perhaps
+           it would prefer it to send requests in elevator (i.e., optimized) order, perhaps
            because it has a backing store and no local elevator. By
            default, the client uses QUEUE_FLAG_NONROT, which effectively
            restricts the function of the elevator to block merges. By