XLink linking element locator attribute href

OpenGIS © Specification OGC 04-094 Copyright © Open Geospatial Consortium, Inc 2005 8 WFS Web Feature Service XML Extensible Markup Language

5.3 Use of examples

This specification makes extensive use of XML examples. They are meant to illustrate the various aspects of a web feature service discussed in this specification. While every effort has been made to ensure that the examples are well formed and valid, this goal was sacrificed for the sake of clarity in many cases. For example, many examples are formatted in a specific way to highlight a particular aspect that would render the example invalid from the perspective of an XML validation tool. Further, most examples reference fictitious servers and data. Thus, this specification does not assert that any XML or keyword-value pair encoded example, copied from this document, will necessarily execute correctly or validate using a particular XML validation tool. Only sections marked as normative should be expected to be well-formed and valid XML or XML Schema documents. 6 Basic service elements

6.1 Introduction

This section describes aspects of OGC Web Feature Service behavior that are independent of particular operations or are common to several operations or interfaces. 6.2 Version numbering and negotiation 6.2.1 Version number form The published specification version number contains three positive integers, separated by decimal points, in the form x.y.z. The numbers y and z will never exceed 99. Each OWS specification is numbered independently.

6.2.2 Version changes

A particular specifications version number shall be changed with each revision. The number shall increase monotonically and shall comprise no more than three integers separated by decimal points, with the first integer being the most significant. There may be gaps in the numerical sequence. Some numbers may denote experimental or interim versions. Service instances and their clients need not support all defined versions, but must obey the negotiation rules below.