Style is a mini word processor that fills the gap between SimpleText and Word: it combines standard formatting features (fonts, colors, independent paragraph alignment, spacing and margins) with a powerful scripting engine that lets you automate complex text-massaging tasks, like turning a document into a web page. A built-in RTF translator lets you exchange documents with Microsoft Word and just about any other word processor.
An enhanced WASTE text engine, featuring, among other goodies, real tabs
Better RTF roundtripping
Support for the EGO (Edit Graphics Object) inter-application communication protocol. This protocol, based on Apple events, allows certain applications (mostly equation editors, like Expressionist or Graphing Calculator) to function as external editors for word processors