[OS X TeX] Adding packages in LaTeX equation editors?

[Stephen Anderson]

The new generation of LaTeX equation editors (LaTeXit, TeXType) looks  
very nice, given LinkBack as a way to get the results directly into  
Keynote.  But so far it looks like main thing they're good for is  
mathematical equations.  As a linguist, my needs are different.  For  
instance, I would like to be able to typeset expressions with  
phonetic symbols from the tipa font, but I don't see any way to do  
that: putting a command like \usepackage[T1,safe]{tipa} in the editor  
window gives an error since \usepackage can only appear in the  
preamble.  Likewise for tree-drawing things.

So: is there some way to modify the preamble in one or the other of  
these packages?  I may be missing something obvious, but neither is  
exactly fully documented.

Thanks,

-- 
Steve Anderson

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