'-signs in vectors - postulated in LM

[Thomas Morley]

Due to the discussion started here:
http://lists.gnu.org/archive/html/lilypond-user/2012-12/msg00025.html
I thought about a patch removing all the superfluous '-signs in
vectors from the docs.

Starting the work on it, I noticed that the LM explicitly postulates them:
/Documentation/learning/tweaks.itely
http://lilypond.org/doc/v2.17/Documentation/learning/visibility-and-color-of-objects

Questions:
(1)
Is there an agreement, that the '-signs should be deleted?
(2)
If yes, than there is not only need for removing them, but to rewrite
that section of the LM.
Should this be done in one patch, or in follow-ups?

-Harm