When an unregistered eBNF is run, the user is given a number code, against which they must enter an alphanumeric code which is obtained from a supplied telephone number. A new number code is generated each time the unregistered eBNF is activated so you have to be sitting in front of your PC to do this- or perhaps leave the PC running all day if like the reviewer you started to install it at 11pm. The eBNF is timed, and will expire in line with the present paper based BNF which should not be used when no longer current. There are three ways of 'opening' the eBNF in order to make use of the contents. The first, default, and most familiar view for BNF users is 'Contents'.
Contents view Two main windows appear.
You can select these chapter headings by clicking once with the mouse and the contents of that page appear in the right window. The fact that any generic drug is displayed with a list of drugs which it interacts is a splendid example of how the eBNF excels over the paper version. When a title is selected on the left it also appears on the top of the right hand window. If you know where you are headed, this is the more direct way to find a drug entry- especially if you are unsure as to what it does. This time you start with an A-Z list and you drill down to the name of the drug you want.