This is about the XML element generic/comments - singleLine and multiLine comments.

Including

• comment type
• startLine
• position [column 0, or before first non-space]
• endLine: [only for multiline comments]
• region: [folding ID, only for multiline comments]
• nesting: *thinking aloud* maybe even a bool whether nesting of multiline comment is supported ?

Think about this more + API how to expose this.