Here are the main elements of the user interface.
The biggest part of the user interface is the editor area. Because Bluefish has a so-called “Multiple Document Interface”, there are actually many editor areas in Bluefish, accessible via the tabs. By default the tabs are on the bottom.
Notice that the current document's tab may be raised by the Gtk theme, and if the document has been modified, its name on the tab is coloured in red. The changes are also noted with red on the open document list, accessible by right-clicking on the tab.