would you be refering to "Symantec Go Back"? or some other Go Back... Go Back Button in your browser perhaps?
I'm going with the more likely Symantec Go Back its a utility that creates whats called a rollback journal as you use your PC it logs changes that are made and allows you to "roll back" in time by undoing the changes that it logged. If effect it returns your computer to a previous state in time.
it could be defined as a more sophisticated very of windows system restore.
IBM/Lenovo T43 2687DSU
Pentium M 2.0Ghz
1024 MB (DDR2 SDRAM)
80 GB Ultra ATA, 5400 RPM
Windows XP Pro
64MB ATI MOBILITY RADEON X300
Integrated 802.11A/B/G, Bluetooth, 10/100/1000 Eth.