Comments cannot be nested inside the other comments.Comments must not appear within attribute values.Comments may appear anywhere in a document.Comments cannot appear before XML declaration.XML Comments Rulesįollowing rules should be followed for XML comments − How to Turn On or Off Notifications for Microsoft News app in Windows 10 The Microsoft News app is a preinstalled UWP (Universal Windows Platform) app in Windows 10 that delivers breaking news and trusted, in-depth reporting from the worlds best journalists. Comments may appear anywhere in XML code. They are visible only in the source code not in the XML code. Comments can be used to include related links, information, and terms. Exampleįollowing example demonstrates the use of comments in XML document −Īny text between characters is considered as a comment. The comments are added as notes or lines for understanding the purpose of an XML code. You must not nest one comment inside the other. You can add textual notes as comments between the characters.
The comments are added as notes or lines for understanding the purpose of an XML code.Ĭomments can be used to include related links, information, and terms. XML comments are similar to HTML comments.
The XML declaration has no closing tag i.e.This chapter explains how comments work in XML documents. The correct order is: version, encoding and standalone.Įither single or double quotes may be used. The order of placing the parameters is important. The Parameter names and values are case-sensitive. If the XML declaration is included, it must contain version number attribute. If the XML declaration is present in the XML, it must be placed as the first line in the XML document. Setting it to yes tells the processor there are no external declarations required for parsing the document.Īn XML declaration should abide with the following rules − It informs the parser whether the document relies on the information from an external source, such as external document type definition (DTD), for its content. It defines the character encoding used in the document. Specifies the version of the XML standard used. Following table shows the above syntax in detail − Parameter SyntaxĮach parameter consists of a parameter name, an equals sign (=), and parameter value inside a quote. It is optional, but when used, it must appear in the first line of the XML document. XML declaration contains details that prepare an XML processor to parse the XML document.
This chapter covers XML declaration in detail.
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