I think that must have been done with a specific font. It looks like T0 is the "normal" level of the font. The 1, 2, or 3 to the right of the T0 is either a literal or a vector subscript; I think a literal subscript (although it's hard to tell from a pdf). The small B or R are at the same level as the T0, whereas the delta is raised slightly. The h with a bar over it is also raised slightly, and the symbol to the right of that is obviously raised a lot. The only way to get something like this is with a special font. Richard
