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This function returns a new instance of class DomComment. The content of the comment is the value of the passed parameter. This node will not show up in the document unless it is inserted with e.g. DomNode_append_child().
The return value is false if an error occured.
See also DomNode_append_child(), DomDocument_create_element(), DomDocument_create_text(), DomDocument_create_attribute(), DomDocument_create_processing_instruction(), DomDocument_create_entity_reference(), DomNode_insert_before().
