Incredible Book; Totally Helpful/Professional Author. Not only is this book really great, easy to use and covers lots of useful materials, but once I was stumped--due to a mistake I made!--so I e-mailed John Tirone (johntirone@yahoo.com) and he responded immediately! He e-mailed me and offered to call me on his unlimited line, which he did. We edited one of his programs that I incorrectly entered into my HP-12C! It took a few minutes and he had me totally straightened out.
Best book imaginable. Best author; provided no quibble support.
Jim Kelly
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