Hi Keith,
Yes BO 3.1 supports Arial Unicode but that has to be installed on your OS.
That is a prerequisite.
In 3.x we used to do below steps
Install Arial Unicode MS font onto the BO server.
a. The font files have to be copied to the font folder of windows
b. Following code must be added to the fontalias.xml located in below location
<BO Installation Path>\BusinessObjects Enterprise 12.0\win32_x86\fonts
<FONT NAME="Arial Unicode MS">
<FONTFAMILY PLATFORM="ttf" NAME="Arial Unicode MS">
<FONTATTRIBUTE BOLD="false" ITALIC="false" LOGICAL="Arial Unicode MS" PHYSICAL="ARIALUNI.TTF"/>
</FONTFAMILY>
<FONTFAMILY PLATFORM="win" NAME="Arial Unicode MS"/>
<FONTFAMILY PLATFORM="java" NAME=" 'Arial Unicode MS', 'Arial Unicode MS'"/>
<FONTFAMILY PLATFORM="html" NAME=" 'Arial Unicode MS', 'Arial Unicode MS'"/>
</FONT>
c. The font has to be specified in the i18n.xml file.
Try if you can get any SAP document on the same