Symbols in ConTeXt?

[Giuseppe Bilotta <bourbaki@bigfoot.com>]

This is probably a stupid question but ... how do I insert symbols
like the trademark, copyright symbols etc?

More in general, is there something like the LaTeX textcomp
package, for ConTeXt?

And finally: along the same line, some LaTeX package whose purpose
is the one to "complement" the Computer Modern font files with
"sensible" fonts so as to allow the same range of characters as
the European Computer Modern fonts, while still using free Type1
fonts, use the cyrillic fonts (wn*) or the LaTeX Symbols (lasy)
fonts. This means for example that guillemots are found at either
position 60, 62 of the cyrillic fonts or at postion 19, 20 of the
lasy fonts. Anything of the sort for ConTeXt?

--
Giuseppe "Oblomov" Bilotta