Re: docs about Rest vertical position

[Kieren MacMillan]

A little more context:

>    “To explicitly specify a rest’s vertical position, write a note followed 
> by \rest.”
> While this is a useful thing to know about, I don't personally believe it's a 
> best practice: it mixes content with presentation, it doesn't play well with 
> \transpose, etc.

Consider, for example, the following two snippets:

\transpose c f \voices 1,2 <<
  { \tweak Y-offset 1 r8 b e' d' }
  \\
  { g16^1 f^2 g a }
>>

\transpose c f \voices 1,2 <<
  { c''8\rest b e' d' }
  \\
  { g16^1 f^2 g a }
>>

Cheers,
Kieren.