[Virtual world environment] Black Sun Passport [Tools used to design avatars] Avatars can be made using any VRML exporting avatar authoring kit such as Sven Technologies' Avatar Maker [Tools used to create a world] 
Worlds can be built out of VRML 1.0 and 2.0 files using any 3D authoring tools such as ParaGraph's Internet3D Space Builder described later in this chapter.