An internal preview view is provided by Screem should you wish to check your work quickly without having to resort to an external browser / viewer. The preview currently only handles plain HTML, ie no javascript, PHP etc. Later versions will support these and also other document formats such as Docbook, and also possibly the use of Mozilla as the preview widget.
Any links in the preview view which link to pages in the site being edited can be clicked on, and the page will be opened up in the editor, ready to be modified. External links will not work.
There are two different preview widgets that can be used, the default is GtkXmHTML and does a very poor job. The second which screem will use if it was available when compiled is GtkHTML. Problems from the GtkXmHTML preview will not be supported. To tell if which one you are using type the following in a terminal window: ldd `which screem` | grep html