Xspec Codes

simplcut : A convolution Comptonization kernel based on simpl and nthcomp, which can scatter an arbitrary input (seed) photon spectrum.

kerrbb2 :  A synthesis of kerrbb, by Li-Xin Li, and bhspec, by Shane Davis.   This is a thin-disk continuum-fitting model that lets one fit for spin.  An RXTE table of spectral hardening values is included.  Instruments with different responses need to have their own tables generated.