Ian Hickson wrote:
The test verifies that when you call insertNode() on a range, the node that is passed is inserted into the range, as is required by DOM2 range section 2.9. Inserting Content, sentences 1 and 2 (before and after the code snippet).
The 2nd sentence doesn't require adding node to range. It talks about context tree which isn't the same thing as range. -Olli
