Answer
System restore
Explanation
System restore is a recovery feature that helps restore your system to the previous condition or point. Most computers have system restore disks which are an advantage to the users especially when the computer clashes.These disks are very effective when it comes to restoring the system to its initial state.
The designs on the map of the GPS system Im would think but can you be more specific?
One gallon is 3.7854 liter so 4 liters are more than one gallon.
