What is style library? Style library is an addition to SmallPlugin in form of a separate dll-file which uses standard plugin interface. In other words it is plugin for Multimedia Builder. The only difference from other MMB plugins is that it is also plugin for another plugin.
Once initialized style library begins to control menu drawing operations and brings a new look to the application. The picture below shows the difference between standard menu look provided by the system and menu with the external style applied:
