the name of the displayed document.
This is a an empty string if no document is displayed or if the source is unknown.
Setting this property uses the mimeSourceFactory() to lookup the named document. It also checks for optional anchors and scrolls the document accordingly.
If the first tag in the document is
If you are using the filesystem access capabilities of the mime source factory, you must ensure that the factory knows about the encoding of specified files; otherwise no data will be available. The default factory handles a couple of common file extensions such as