I tried to output some Unicode text using both iText-2.1.7 and iText-5.1.3.
While Devanagari characters got stacked properly, I am unable to see Tibetan characters properly stacked.
In stead, each character is occupying a separate space. I tried with BaseFonts both ARIALUNI.TTF and TibMachUni-1.901b.ttf but without success.
Googling gave me a post of 2009 which indicated it was not readily possible then.
I am stuck in the middle of a Unicode project. I would appreciate get clues to proceed.