[texhax] WYSEEWYG Editors for LaTeX

[Paul Stanley]

Hi folks
I have heard of such things and what I'd like to know is, is the 
LaTeX source *interpreted*, as it were, live in the edit window? for 
example, say, I wanted to typeset a fraction such as `\frac{x}{y^2}', 
would I be able to *see* the result of my code immediately, that is 
to say, without having to run the LaTeX compiler separately?

Cheers,
Paul