Inline { exposedField MFString url [] field SFVec3f bboxCenter 0 0 0 field SFVec3f bboxSize -1 -1 -1 }Explanation :
The Inline node is a grouping node that reads its children data from a location in the World Wide Web. Exactly when its children are read and displayed is not defined; reading the children may be delayed until the Inline node's bounding box is visible to the viewer. The url field specifies the URL containing the children. An Inline node with an empty URL does nothing.
Each specified URL shall refer to a valid VRML file that contains a list of children nodes at the top level as described in "4.6.5 Grouping and children nodes". The results are undefined if the URL refers to a file that is not VRML or if the file contains non-children nodes at the top level.
If multiple URLs are specified, the browser may display a URL of a lower preference file while it is obtaining, or if it is unable to obtain, the higher preference file. Details on the url field and preference order may be found in "4.5 VRML and the World Wide Web".
Results are undefined if the contents of the URL change after it has been loaded.
The bboxCenter and bboxSize fields specify a bounding box that encloses the Inline node's children. This is a hint that may be used for optimization purposes. If the specified bounding box is smaller than the actual bounding box of the children at any time, the results are undefined. A default bboxSize value, (-1, -1, -1), implies that the bounding box is not specified and if needed must be calculated by the browser. A description of the bboxCenter and bboxSize fields is in "4.6.4 Bounding boxes".