This directory includes the following files: tfunc - the GR transfer function for the spectrum and polarization of the emission from an accretion disk around a rotating black hole. See Laor, Netzer, & Piran 1990, MNRAS, 242, 560 for details of the calculations. diskspec - an example for a local disk continuum emission, to be used as input for tran.f. This model is for m_9=0.1, mdot=0.1, alpha=0.1, viscosity\propto (PrPg)^1/2, and a rotating BH. tran.f - a FORTRAN code which reads the local disk emission as a function of radius from unit 2 (use diskspec as an example), the transfer function (tfunc) from unit 1, the inclination angle (read from screen), and outputs the disk continuum and polarization at infinity to unit 4. ftn04 - the output file you should get after runing tran.f with tfunc and diskspec as input to unit 1 and unit 2.