VRML is a format for 3D multimedia and shared virtual worlds on the WWW. In comparison to HTML,VRML adds the next level to of interaction,structured graphics,and extra dimensions(z and time) to the presentation of documents
VRML是爲3D多媒體和WWW上共享虛擬現實定義的文檔格式。與HTML相比，VRML增加了低一級的交互作用、結構化的圖形和表現文檔的附加的維元（Z和時間）。
The applications of VRML broad,ranging from simple business graphics to entertaining WWW page graphics,manufacturing, scientific, entertainment,and education applications, and 3D share virtual wolds and communities.
VRML的應用是很廣泛的，應用範圍從簡單的商業圖形到娛樂性的WWW頁面，從製造業、科學、娛樂和教育方面的應用到三維共享虛擬現實和虛擬社區等。
X3D is the name under which the development of VRML is continued.X3D is based on XML and is backwards compatible with VRML.Furthermore,it is componentized, profiled,and extensible, which makes it possible to use X3D in very different from high-end visualizations to lightweight applications.
VRML的繼續發展就是X3D是基於XML的，是與VMML向後兼容過的，而且它是組件化的、形象化的，是可擴展的，這使得X3D可以應用在完全不同的情景中，從高端的可視化應用到輕量級的應用都是X3D的領域。