 is computed, is determined automatically from the dimensions of the input vector. Alternative, backprojection can be forced with </span><span style=' font-family: monospace;'>A' * y</span><span>.</span></div><div  class = 'S1'><span>Other examples include LSQR, SA-WLS (includes TOF example), ATP-WLS, EM-PKMA with TV regularization and ADMM with TV. Of these, EM-PKMA and ADMM provide examples on how to use the built-in priors. Prepass functions must be run for the following priors: </span></div><div  class 