csm_create_data_structure
                        Create a cropping systems model (CSM) data
                        structure
csm_create_model        Create a model definition for a Cropping System
                        Model (CSM)
csm_create_parameter    Create a cropping systems model (CSM) parameter
                        variable
csm_create_state        Create a cropping systems model (CSM) state
                        variable
csm_create_transform    Create a cropping systems model (CSM)
                        transformed variable
csm_create_variable     Create a cropping systems model (CSM) variable
csm_get_at_t            Linearly interpolate a time-varying variable at
                        specific time point
csm_mod_arr             Modified Arrhenius function
csm_render_model        Render a defined Cropping System Model (CSM)
csm_run_sim             Run a Cropping System Model (CSM) simulation
csm_time_vector         Generate vector of times for simulation
is_data_structure       Determine if object is a data structure
is_input                Determine if object is a model input
is_parameter            Determine if object is a model parameter
is_state_variable       Determine if object is state variable
is_transform            Determine if object is a transformed variable
