From VFXPedia

Tooltips And The Status Bar

Tooltips

Hold the mouse pointer over any tool to display a pop-up Tooltip containing that tool's name, aspect, resolution and color depth. Any notes that have been added to the tool's comments tab will also be displayed in the tooltip.

Status Bar

The Status Bar is at the bottom of the screen, to the left of the interface. It also displays the name, aspect and resolution of the tool beneath the mouse pointer.