I had some elements. Clies (OS4) have 4 kind of fonts (tiny, small, standard and large). Tungstens (OS5) have only 2 of them (standard and large). The Isilo doc speaks about a choice of four fonts... that's true as far as Clies are concerned... not TT
One way to deal with this issue would have be to implement new third party fonts in the TT... that's impossible because OS5 doesn't support Hack extensions (whatever Hack manager you use).
I really whish I could use small fonts with Isilo on my TT ! Any idea ?