Toshiba WT8-B - Manual (Page 31)

Benefits of Hibernation Mode
The Hibernation Mode feature provides the following benefits:
Saves data to the internal storage when the tablet automatically shuts
down because of a low battery condition.
You can return to your previous working environment immediately
when you turn on the tablet.
Saves power by shutting down the system when the tablet receives no
input or hardware access for the time period set by the System
Hibernate feature.
User's Manual 2-11