From 51a73afa4b4a6ee1a4e02a7c6b1f6c44c54e47e0 Mon Sep 17 00:00:00 2001
From: Sandro Santilli <strk@keybit.net>
Date: Mon, 13 Feb 2012 20:44:48 +0000
Subject: [PATCH] Fix documentation of GetRingEdges

git-svn-id: http://svn.osgeo.org/postgis/trunk@9179 b70326c6-7e19-0410-871a-916f4a2858ee
---
 doc/extras_topology.xml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/doc/extras_topology.xml b/doc/extras_topology.xml
index 2778675eb..e747ccd2d 100644
--- a/doc/extras_topology.xml
+++ b/doc/extras_topology.xml
@@ -1836,6 +1836,7 @@ Returns an ordered set of edges forming a ring with the given edge .
 					<funcdef>getfaceedges_returntype <function>GetRingEdges</function></funcdef>
 					<paramdef><type>varchar </type> <parameter>atopology</parameter></paramdef>
 					<paramdef><type>integer </type> <parameter>aring</parameter></paramdef>
+					<paramdef choice="opt"><type>integer </type> <parameter>max_edges=null</parameter></paramdef>
 					</funcprototype>
 				</funcsynopsis>
 			</refsynopsisdiv>
@@ -1851,6 +1852,12 @@ A negative edge identifier means that the given edge is taken backward.
 You can pass a negative edge id to start walking backward.
 		</para>
 
+                <para>
+If <varname>max_edges</varname> is not null no more than those records
+are returned by that function. This is meant to be a safety parameter
+when dealing with possibly invalid topologies.
+		</para>
+
                 
                 <!-- use this format if new function -->
                 <para>Availability: 2.0 </para>
-- 
2.50.1