In ID CS6 the Pages panel menu has a page attributes submenu and one of the items is Optional in Liquid HTML5. Can anyone explain what this does when turned on/off?
There was an Adobe tech demo some time ago showing an export to HTML5 which dynamically retains liquid layout capabilities in the browser. The demo was pre-CS6, so I'm guessing they didn't get the feature ready in time for the initial release or even reserved it for a Creative Cloud update to ID CS6 on purpose.
Here is a video recording demonstrating liquid layout (which has since shipped) and then the HTML5 export:
North America
Europe, Middle East and Africa
Asia Pacific