fermata over rest, tempo positioning, solo/tutti

[jo.clarinet]

I've just started using LilyPond, never having typeset music before, and am
getting on quite well, but there are three things I'm really stuck on - I
have tried to search on here and on other sites, but seem to have a problem
in that some of the links given don't work on my computer! So I apologise in
advance if these are really obvious questions, and hope you don't mind me
asking.

1. How can I get a fermata sign over a rest? I've tried all the permutations
I can think of but with no luck!

2. I can get tempo indications like Allegro, Andante etc printed up, but
when tempo changes occur in the course of a piece, they seem to come up
about half-a-bar before they should. I set the \mark\markup for just before
the first note of the new section, so I can't see why it comes up earlier.
Also, how can I reduce the font a bit? I'd prefer the words to be a bit
smaller.

3. How do I indicate 'solo' and 'tutti' ?

I hope someone can help me!

Jo
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