'''This page is at the very initial stages of development: Please do not change it yet unless you know the topic well!'''
[[LuaTeX]] and [[MkIV]] allow advanced usage and manipulation of [[Open Type]] <i>open-type features</i>. Some features, such as <i>onum</i> (oldstyle) and <i>smcp</i> (smallcaps) are known to most users of Open Type fonts, and virtually every open type font has default features for kerning (<i>kern</i>) and ligatures (<i>liga</i>). More advanced OT fonts can have lots more, including the Stylistic Set feature <i>ss<nn></i> (where <i>nn</i> stands for any numeral between 01 and 99).
== Note ==
An earlier version of this functionality was contained in the commands