Merge pull request #114 from pdowler/master

final editorial fixes from TCG vote

Author: pdowler

DataLink.tex

@@ -65,6 +65,10 @@ \section*{Conformance-related definitions}
 ``\rfcoptional'' (in upper or lower case) used in this document are to be
 interpreted as described in IETF standard RFC2119 \citep{std:RFC2119}.
 
+This document uses curly braces (e.g. \{name\}) to refer to a named concept
+such as a web service endpoint where the text requires a logical name but 
+the actual name in a service implementing the standard are not restricted.
+
 The \emph{Virtual Observatory (VO)} is a
 general term for a collection of federated resources that can be used
 to conduct astronomical research, education, and outreach.