When PRO/II exports the simulation to a keyword file,
CAPE-OPEN property packages are exported as PRO/II thermodynamic systems. The "progid" and package name (if required) are written to the keyword file. If the property package supports COM persistence, the state of property package will be written to a file and saved with the generated keyword file.
CAPE-OPEN unit operations are exported as normal unit operations. The "progid" (a string identifier) is written to the keyword file. If the unit supports COM persistence, the state of unit will be written to a file and saved with the generated keyword file. If the unit does not support COM persistence, the names and values of all input and output parameters are written to keyword file.