How to mix \stdbarrules and \sepbarrules ?

[Dmytro O. Redchuk]

Hi,

   i'm just starting to learn LilyPond, so i have questions:

   1. Is it possible to mix separate bar rules (like \sepbarrules in
      MusixTeX) for different instruments and "common" bar rules for them
      (like \stdbarrules in MusixTeX)?
   2. How to hide time signature at all? Sorry, i couldn't find out.
   3. If i want to type scores with time signature changing often (every
      couple of measures) -- which technique is better?
      Change time signature (while hiding it) or use \partial or something
      else?

I used to type with MusixTeX actually. LilyPond looks a bit different :-)

Thanks,
-- 
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        `    G.m-"^m`m'        Dmytro O. Redchuk