R 1.x Series
R:        3-900051-00-3
R-FAQ:	  3-900051-01-1
R-admin:  3-900051-02-X
R-data:   3-900051-03-8
R-exts:   3-900051-04-6
R-intro:  3-900051-05-4
R-lang:   3-900051-06-2

R 2.x Series
R:        3-900051-07-0
R-FAQ:	  3-900051-08-9
R-admin:  3-900051-09-7
R-data:   3-900051-10-0
R-exts:   3-900051-11-9
R-intro:  3-900051-12-7
R-lang:   3-900051-13-5