Files which comprise a project baseline, milestone, or any other
relationship can be collected together in a discpac created by
FCX and linked by a simple key. The files can then be located
as a group using the key. Keys can be tailored to the relationship,
such as
Date and time
Version number
Build number
Calendar quarter
Custom string
Use discpacs to
Collect related files together in one place
for safe keeping
Keep multiple versions of files online
Maintain backup versions of files for historical reference
View a list of 
bookmark