Where is the AUR?
The AUR (Advanced Users Reference, sometimes called the Advanced Users Guide) is currently being written. Part 1, including the CAS command reference and general command reference, and Part 2, with more detailed information on the use of the calculator, are available on both HP’s web site and at http://www.hpcalc.org/hp49/docs/misc/. A print version, which is optionally free after mailing in the 49G’s registration card, should arrive in the near future. Simply check which of the three manuals you want on the registration card, and HP will mail it/them free of charge. Please only do this if you will honestly take advantage of the information in the AUR; I’m sure it will cost HP quite a bit to mail out the books.