WHere are the Arabic/Hebrew variants of the Ubuntu font?

[okok]

When I view the Ubuntu font that came with my Ubuntu OS in GNOME Character Map I can see its Arabic and Hebrew variants. However, when I tried to use the files under Ubuntu Font Family as embeded fonts on a web page, characters in those languages failed to display. So it seems that the Arabic and Hebrew variants of the fonts are hidden somewhere else. But where? Any idea how I can locate the files that contain them?

[okok]

I think the problem is solved: the font displayed in Ubuntu isn't the Ubuntu font, but DejaVu Sans, whose Right-to-Left variants seem similar to the Ubuntu font.