<fo:inline baseline-shift="sup" font-size="smaller">superscript </fo:inline> and <fo:inline baseline-shift="sub" font-size="smaller">subscript</fo:inline> sample these tags were supposed to create super and subscript but this was not happning the resultant pdf file had only text but baseline was not changed
In fop 0.20.5, baseline-shift has not been implemented. However, you can use vertical-align="super" or vertical-align="sub" instead. The 0.20.5 release will not be developed any further. A re-written 0.90 will be released in the next few weeks. So I'm closing this bug. A polite request: please ask questions on the fop-user list before raising a bug as you will get an answer to your problem/question sooner.
batch transition to closed remaining pre-FOP1.0 resolved bugs