Changes in version 2.0.4 (2024-07-11) o This version is coded in R language exclusively to support across system portability o Log-linear and power analyses are enhanced with ability to model risks (rates) and relative risks (standardized ratios). Modelling survival data with interval censoring is also supported. o Convergency diagnostic is added based on renewal theory o In order to perform power analyses for Hessians with singularity of order above 4 use _ltable_ version 2.0.1 available for MacOS machines. That implements Levenberg-Marquardt algorithm and requires that GSL: GNU Scientific Library has to be installed first. Install GSL: GNU Scientific Library from http://www.gnu.org/software/gsl.