[XeTeX] xelatex + slanted

[M. Niedermair]

Hi,

if i use a Type 1 font, i can use SlantFont in the map-file, to produce 
a slanted variant from a regular font.

e.g.
fxbbo-xb-02 LinBiolinumB " xb02Encoding ReEncodeFont 0.25 SlantFont " 
<xb-02.enc <fxbb.pfb


How can i do this with xelatex and a otf-Font?

By
Michael