User's Guide
Page 191
... more licenses. ansi2knr.c is NOT covered by the above copyright and conditions, but are readable by M.I.T. principally, that the arithmetic coding option of the JPEG spec is covered by patents owned by the product vendor. the resulting GIF files are assumed by IBM, AT&T, and Mitsubishi. (2) If only executable code is...
... more licenses. ansi2knr.c is NOT covered by the above copyright and conditions, but are readable by M.I.T. principally, that the arithmetic coding option of the JPEG spec is covered by patents owned by the product vendor. the resulting GIF files are assumed by IBM, AT&T, and Mitsubishi. (2) If only executable code is...