2.2.3 [XML] Section 2.5, Comments

C0002:

The specification states:

 Definition: Comments may appear anywhere in a document outside other markup; in 
 addition, they may appear within the document type declaration at places allowed by 
 the grammar. They are not part of the document's character data; an XML processor 
 MAY, but need not, make it possible for an application to retrieve the text of 
 comments. For compatibility, the string "--" (double-hyphen) MUST NOT occur within 
 comments.] Parameter entity references MUST NOT be recognized within comments.

MSXML3 and MSXML6

The following clarifications apply:

  • Comment text can be retrieved.

  • A valid comment can contain a double hyphen ("--") when the double hyphen is represented by the character reference "--".

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