Some of the names suggested above slightly describe the discussed command
(linehistory, colophon, commentary), but may be confused with a different
functionality, and other names simply do not describe the command.
For some reason folks suppose the purpose of the command is to show the
creator of each line, however the real purpose is to show the [last]
revision description, i.e. fully qualified name, date, creator, summary.
The creator may be (and is often) constant among revision descriptions.
"linedesc" would be more accurate. However, "annotate" sounds even better
to me, and is familar to cvs users.
Regards,
Mikhael.