Got an email about this too. I got curious and took a look at my HL2 Raising the Bar book and found the answer in the first chapter. The codename for HL was Quiver.
[quote name='Flying PJ']Got an email about this too. I got curious and took a look at my HL2 Raising the Bar book and found the answer in the first chapter. The codename for HL was Quiver.[/QUOTE]