Smart Font Features
Padauk is a TrueType font with smart font capabilities added using OpenType and Graphite font technologies. This means that complex typographic issues such as the placement of combining marks or the formation of conjuncts and ligatures are handled by the font, provided you are running an application that provides an adequate level of support for one of these smart font technologies.
Accessing features for variant glyphs
There are some Myanmar character shape differences in different languages that use the Myanmar script that can be accessed by using smart font features. The Graphite and OpenType features supporting the variant glyphs are documented here: Padauk features document — This document was produced with LibreOffice 5.1.
MyanmarWeb also documents how to use the fonts on the web.