The shred program offers multiple overwrites, as well as more secure deletion of individual files. The AIDS virus overwrites the first 13,952 bytes of an infected file. Finally the virus overwrites the master boot record of the infected computer, making it unusable. New data completely overwrites previous data. Morty then fails to restart the relationship and accidentally overwrites the save point. AIDS is a computer virus written in Turbo Pascal 3.01a which overwrites COM files. When extracting such archive, usually the latter version of a file overwrites the former. Each cut or copy overwrites the previous contents. Viewing the directory with a command overwrites the BASIC program in memory. This data warehouse overwrites any data older than a year with newer data. This method overwrites old with new data, and therefore does not track historical data. This new feature, called on-demand session restore, overwrites the previous session on exit without prompting. Its copy-on-write approach never overwrites currently-in-use data. The most obvious ROP overwrites the destination with the source. This matches the minimal number of overwrites required for a completed in-place sort.