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Is it possible to have a parameter, that contains some values pre defined?
See example:
No, it will continue to work. The restricted parameter definition is stored with the file. No one else who uses this file will need the original restricted parameter list unless they want to create new files with the same restrictions.
There is an update menu option so if you change the values in your restricted_params.dat file, you can update the values stored in your part/assembly/drawing file. There is an option to show which values are not in agreement with the master file, too.
We use this file for certain drawing signatures and when that list changes, I update the main file and then update the drawing templates.