A computer program/software determines the latest version for one or more data files used by several interconnected computers or workstations, and selectively updates each file version stored in individual directories on the computers or workstations. The program allows sharing of the data files among...http://www.google.com/patents/US5909689?utm_source=gb-gplus-sharePatent US5909689 - Automatic update of file versions for files shared by several computers which record in respective file directories temporal information for indicating when the files have been created