"Noodle" - The Dynamic Connection Line

"Noodle" is the nickname of the dynamic connection line, which is a sub-UI feature within the commenting system redesign of Habitat. It provides a visual association between comments and the content it attaches to. The line always stays connected while user scrolls the main content or the comment side bar, so when the targeted content or comment is off-screen, the user can still trace the line to know where to find. "Delightful, with lots of usability value" is the way user describe this UI feature.