Final answer:
On the EICAS page, if there are no caution or advisory lights currently on, the enclosure boxes will typically remain in the bottom left or right corners.
Step-by-step explanation:
On the EICAS (Engine Indicating and Crew Alerting System) page in an aircraft, if there are no caution or advisory lights currently illuminated on the display, the enclosure boxes will typically remain in the bottom left or right corners. These enclosure boxes may contain additional information or status indicators related to the aircraft's engine systems or other critical parameters. However, if there are no active warnings or alerts, these boxes may not display any content.