(This page is intended for LibreOffice Writer and Microsoft Word users. For LaTeX users, the font Linux Libertine is installed with the packages libertine and newtxmath.)
The font for EISS 10 is Linux Libertine (often just: Libertine), which—despite its name—may be used on any system that understands TrueType fonts. For convenience, I've included a local copy of the most recent version (5.3.0) of this font below. Please install it if you don't already have it installed. Since Linux Libertine has changed a lot over the past years, please try to use the most recent version of the font.
Although Linux Libertine includes a good selection of logic/math/phonetic symbols, it may turn out that there's a symbol that you crucially need which isn't included. If this is the case, please use the font GNU FreeFont for the symbol in question. (GNU FreeFont includes more symbols than Linux Libertine.) Again, for convenience, I've included a local copy of the most recent version (20120503) of this font. GNU FreeFont comes in three varieties: serif, sans serif, and typewriter. The serif variety matches Linux Libertine best and is probably what you would want to use.
Please note, though, that Linux Libertine is the first choice of font for EISS 10, and in most cases you won't need to worry about GNU FreeFont at all.
(To install a font, copy all of the TTF files to your fonts directory. You don't need to keep the other files.)
Download: Linux Libertine TTF 5.3.0 | GNU Freefont TTF 20120503