RE: require basic stuff from specific packages

[Drew Adams <drew.adams@oracle.com>]

> > If you are in the manual, then `i x RET'.
> 
> OK, so there is no hit for "trim" in the index.

If you think there should be one: `M-x report-emacs-bug'.

> > If `x' is not in the index then you will need
> > to search for it: `C-s x C-s C-s...' or
> > likewise, with `C-M-s', if `x' is a regexp.
> 
> The normal search? Cool, only in what
> buffer, then?

Buffer `*info*', in some manual.  Doesn't matter what node:
you can repeat it to search across nodes, throughout the book,
including with wraparound.

This is the way to find things that are not indexed,
including particular strings of text that would never
be indexed.  And don't forget regexp search: `C-M-s'.

This has been in Emacs since the beginning, except that
in the old days it was not incremental search across nodes.
You had to type `s', then a regexp and then `RET'.  Then
you repeated the search by just `s RET'.  Incremental
search is much better, of course.

But the main takeaway should be that `i' is your friend.
Use search only when `i' doesn't help, or within a node.

One reason for this is that a (smart and knowledgeable)
human being has specified the occurrences of something
that _should_ be indexed.  That's quite different from
just searching and thus hitting _each_ occurrence.