Allyn just gave a hint as to what's going on, namely:
AD> Look in the drafts plex!
In E-L, an artifact goes out-of-date if some other artifact that it refers
to goes out-of-date. The default view on the artifacts plex shows only
up-to-date artifacts. But as Prof. Cheatham mentioned during the first
lecture, the out-of-date referring artifact has a draft successor. It's
that draft that you want to either takeover and work on, or commit to get a
fully up-to-date tree.
The way to get to a draft is to view the drafts plex. Hence Allyn's
advice.
Unfortunately, the drafts plex just now has a whole bunch of drafts named
Life, Life2, and so on, that don't say whom they belong to. How to find
the one that is the successor of _your_ out-of-date artifact?
Here's a recipe.
Extend your view of the artifacts plex, so that you see both the up-to-date
artifacts (whose lines start with a + sign) and the out-of-date ones (lines
starting with a - sign). To do this, use the refilter command (C-z C-i).
The attribute you want to change in your view is called `up-to-date'. You
want to change its value from `+' to `+-'. The way to tell refilter that
you've finished supplying changed attributes is to hit C-].
Go down towards the bottom of the artifacts plex and put your cursor on the
line of the out-of-date artifact whose draft successor you want to locate.
Picl the latest one with the right name and type. Then hit C-z x to
remember that artifact by copying it to the emacs kill ring.
Now get into a view on the drafts plex. Issue M-x find-successor-draft,
and when it prompts for an artifact, type C-y RET. It leaves the cursor
on the line of the `drafts' buffer for the draft you seek. From there, you
can use M-x takeover-draft or one of the draft-commitment commands.
"It's just that simple."
Glenn