The project status bar displays the following:
- Current status of the active design
- Descriptions for menu commands and toolbar buttons that you hover over
- Information about the selected text file that you are editing, including line numbers and modes
- Position of elements that you hover over in the Device and Package windows
Tip: When one or more designs become
out-of-date, a More Info link appears in the
project status bar. Click the link to view information about the changes that caused the
design to become out-of-date.
Tip: To display the total memory heap
size and amount used by the Vivado IDE, double-click the drag handle
in the status bar. By default, memory cleanup occurs automatically, but you can click
the trash can button 
to force a memory cleanup.
to force a memory cleanup.