Merge pull request #44 from molinaro-m/sr0-maxrec-clarify

clarify SR=0 wrt MAXREC=0

ConeSearch.tex

@@ -208,8 +208,14 @@ \subsubsection{DEC} \textbf{DEC} represents a declination in the ICRS
 
 \subsubsection{SR} \textbf{SR} represents the radius of the cone to
 search, given in decimal degrees. It is a single valued parameter and
-\textbf{must} be present in the query. If set to zero (SR=0) it should
-have the same effect as setting MAXREC=0, i.e. a service metadata
+\textbf{must} be present in the query. 
+
+If set to zero (SR=0) it should
+not return an error condition because the request might describe an 
+interest in retrieving only the metadata structure of the service's 
+response (i.e. discovery of the FIELDS delivered by the service).
+
+This is similar to setting MAXREC=0, i.e. a service metadata
 request as prescribed by DALI\footnote{SR=0 is kept in this version of
 this specification for back compatibility. It is suggested to prefer the
 usage of MAXREC to enable metadata discovery}\textsuperscript{,
@@ -228,7 +234,7 @@ \subsubsection{TIME} \textbf{TIME} represents the time interval to be
 
 \subsubsection{MAXREC} As defined by DALI a cone search \textbf{should}
 accept the \textbf{MAXREC} parameter to let the client limit the number
-of records returned or require a service metadata response (see above).
+of records returned or require a service metadata response.
 Its usage is encouraged and preferred to the SR=0 solution for metadata
 discovery.
 

Makefile

@@ -8,7 +8,7 @@ DOCVERSION = 1.1
 
 # Publication date, ISO format; update manually for "releases"
 #DOCDATE = 2019-11-15
-DOCDATE = 2020-08-20
+DOCDATE = 2020-08-28
 
 # What is it you're writing: NOTE, WD, PR, REC, PEN, or EN
 DOCTYPE = WD