mdl: List with models. Each list element has the name of
the R-object for that dataset. Each element has the following structure:
label: Text label for the model (e.g. one-compartment model).
MOD_TYPE: Type of module.
id: Module ID.
rx_obj: The rxode2 object.
rx_obj_name: The rxode2 object name that holds the model.
ts_obj List with elements system and details
ts_obj_name: The object name that holds the model time scale information.
fcn_def: Text to define the model
MDLMETA: Notes about the model.
code: Code to generate the model.
checksum: Module checksum.
MDLchecksum: Model checksum.