Interstitials are additional inserts only available on the digital editions. They can be either static or fully interactive (HTML5), giving you the option to engage with readers as part of their reading experience. Interstitials can be either fixed to a placement or dynamic. Dynamic interstitials are not bound by placement and can be exposed to a reader no matter which page they start at. They are re-surfaced based on readers reading habit for repeat exposure and top of mind recall.