Footnotes & Symbols

[Caio Barros]

Hi everybody
I work with compositions and I loved the whole idea of Lilypond
I'm thinking in start using it, but first I need to know if it's
possible to add footnotes or any kind of text in any place in the
score.
Other question: Can I add images and symbols to a Lilypond score?
See, I work with modern notation, so I need a lot of resources that
normaly are not used in traditional notation.

Thanks, and sorry the bad english.