Model The following pages give information on how to write and set up a model for simulations in Simulx: Setting the model Using or editing models from the libraries Writing your own model Model syntax: mlxtran language Introduction: model structure for Simulx [LONGITUDINAL]: Writing the structural and observation models Smlx [INDIVIDUAL]: Defining parameter distributions [COVARIATE]: describing covariates Language reference Libraries of models PK model library PK/PD model library TMDD model library Library of PK models with double absorption Library of parent–metabolite models Tumor growth inhibition (TGI) library Time-to-event model library Count data model library Typical models Typical PK models Models for non-continuous data Typical extensions of structural models Advanced models External model editor