confused with build-in parameter in CDF and parameter in .scs

[iamyuchenjie]

what's the difference between the job of cdf parameter, which can be set manually in Cadence build-in dialog window when try to "i" an part on the schematics, and that of simulation model file, like .scs, which is loaded in the procedure when try to do spectre simulation?
Maybe some parameters are overloaded or dependence between parameters of them？
Is there any precedence mechanism for loading the parameter of them in Cadence specter? Or i have misunderstood something of them, please point out.
Thank you very much