It was written by Gordon Letwin and others at Microsoft and added to OS/2 version 1.2, at that time still a joint undertaking of Microsoft and IBM, and released in 1988.
See kirjutati Gordon Letwini ja teiste Microsofti töötajate poolt ning lisati OS/2 versioonile 1.2, mida arendati sel ajal Microsofti ja IBM'i ühistööna.