xml Building blocks Comments
Example
Comments in XML look like so:
<!-- This is a comment -->
They can appear in element content or top-level:
<?xml version="1.0"?>
<!-- a comment at the top-level -->
<document>
<!-- a comment inside the document -->
</document>
Comments cannot appear inside tags or inside attributes:
<element <!-- comment with -- inside --> />
or
<element attr="<!-- comment with -- inside -->"/>
are not well-formed.
The character sequence -- cannot appear in the middle of a comment. This is not well-formed XML:
<!-- comment with -- inside -->
Comments in XML, unlike in other languages such as C++, are part of the data model: they are parsed, forwarded, and visible to the consuming application.
