How do I incorporate LaTeX symbols into PostScript files in general (including XFig exports)?
Well, there’s a package called PSFrag available which allows you to include commands in PostScript files. If you use the package in your LaTeX files, PSFrag will optionally search your eps includes for these commands and process the contents in LaTeX. You can either include the commands specifically (using the \tex{} primitive), or create aliases which are then translated using PSFrag commands just before including the eps file. Check out the PSFrag documentation for details. I personally am currently using this method instead of XFig’s native method to include LaTeX symbols in my drawings. I simply include the necessary \tex{} commands in my drawing. It’s more general, flexible, and you don’t have to export your drawings twice in XFig!
