I guess the best answer is Virus.
Virus is a malicious computer program that is designed to create annoying glitches or destroy data.
On-board? im assuming so. an on-board storage is where people keep luggage/items on a ship.
hopefully i could help ;)
A dollar sign after both the letter and the number for each cell reference you want to keep the same will keep it the same when using the fill down/across function.
Answer:
If its any easy question, answer it yourself.
Explanation:
:)