Special formatting of text symbols in graphs?

Hey,

When making a graph, doing the following gives text symbols on a graph:
- Choosing "Symbol" [where you would set the data symbols]
- "Text"
- Selecting "Text from Wave"

I've used this to label mass spectral peaks with their corresponding m/z.
However, it'd be really nice if I could label peaks "properly", specifying charges and identifying atomic clusters...
e.g. 3 carbon atoms would be \S36\MC\B3\S\M\S+ for 36-C-3-+

Is there any way to add this special formatting to my text wave labels?
I messed around a bit and can't find it in the manual. I also tried annotation macros but their placement seems too haphazard for such an application.