diff /usr/src
commit - 009b798eb105bd816df72071c0b273195535717e
path + /usr/src
blob - 57f405361568d301ed43d6326dbf3b6ad058a176
file + usr.bin/units/units.1
--- usr.bin/units/units.1
+++ usr.bin/units/units.1
@@ -212,6 +212,17 @@ the standard units library
 .%R ISO/IEC 80000
 .%T Quantities and units \(em Part 13: Information science and technology
 .Re
+.Sh HISTORY
+A
+.Nm
+command first appeared in
+.At v7 .
+This version of
+.Nm
+appeared in
+.Nx 1.0
+and has been available since
+.Ox 2.0 .
 .Sh AUTHORS
 .An Adrian Mariano Aq Mt adrian@cam.cornell.edu
 or