Indicates that the content of the element is an identifier with transient semantics and SHOULD be treated as an opaque and temporary value by the relying party.

Popover/Tooltip/Hovercard - These are passive approaches to showing more information. These are used to add simple instructions or explanations or foreshadow what will happen if you click a link.

A popover is a transient view that shows on a content screen when a user clicks on a control button or within a defined area.

The relationship between cumulative CO2 emissions and temperature change is known as the “Transient Climate Response to Cumulative Emissions” (TCRE) and is a robust predictor of CO2-induced warming across a wide range of emissions levels and pathways.