I just bought the font Uberschrift which brings tons of ligatures with it, but u nfortunately I'm not able to get access to them.

I tried to find out wich is the symbol's name and this is what fontmatrix tells me:

I found it not in the standard latin1 alphabet but in "un-mapped glyphs".
It is symbol I+191.
How do I get access to this ligature with xelatex or luatex with fontspec?
\documentclass[11pt]{standalone}
\usepackage{fontspec}
\usepackage{xltxtra}
\usepackage{polyglossia}% babel for Xelatex
\setdefaultlanguage{german}
\defaultfontfeatures{Ligatures=TeX,Scale=MatchLowercase}
\setmainfont{Uberschrift}
\pagestyle{empty}
\begin{document}
Überschrift
\end{document}
\XeTeXglyph191\relaxor\XeTeXglyph"191\relax(the latter uses hexadecimal. – egreg Dec 27 '14 at 22:42Ligatureskey? Doesn't the description of the font say anything about its open type features? Did you tryotfinfo? – Ulrike Fischer Dec 28 '14 at 18:05