Oscar Lopez wrote: > As a side note, how the external inset knows if the fig file must be > exported as combined ps/latex, it scans the fig file looking for the > special flag of the text?
No. As you can see from the definition of the xfig external inset it creates a file in pstex format (for latex) or pdftex format (for pdflatex). If you look up the fig->pstex and fig->pdftex converters you can see that those files are create by the scripts fig2pstex.py and fig2pdftex.py, respectively. These scripts invoke fig2dev, and it is finally that program that creates a bit of wrapper LaTeX code that takes care of the special text. This may look complicated, but it works well, and the advantage over examining the .fig file in LyX is that we do not need to know anything about the .fig file format, so this works even if the .fig file format changes. Georg
