|Each issue of the Penley
Radar Archives is given a version number.
The version history contains a summary record of the versions -
indicating when each was created with a list of the significant
changes and new material.
Each issue is made on one CD-ROM which is identified
by the label:
Penley RADar ARchives version 02b (9th May
for the disc label shortened to: RADAR_02b
(Earlier versions of the archives had a more complex
numbering system which anticipated holding electronic versions
on more than one CD-ROM).