Settings and activity

The ability to specify where an element is fixed on the page.

For example, when scrolling through a news article, supplemental information like images or footnotes could float in the margin while scrolling the appropriate section, and then keep scrolling with the page once the section ends.

This would allow for much stronger prototyping of navigation items, prompts, alerts etc. etc.

It would be helpful to be able to specify an offset for where pages load.

Preserve Scroll Position isn't enough when the pages you're switching between have different lengths.

This feature could be added as an option under Preserve Scroll Position.