Most complete support for FB2 - styles, tables, footnotes at the bottom of the page
Extensive font rendering capabilities: use of ligatures, kerning, hinting option selection, floating punctuation, simultaneous use of several fonts, including fallback fonts
Detection of the main font incompatible with the language of the book
Reading books directly from a ZIP archive
TXT auto reformat, automatic encoding recognition
Flexible styling with CSS files
Background pictures, textures, or solid background