I jump in here...
Philo's second point means, that unofficial parts, which are used can be changed due to our certification process. That means the origin, rotation and shape or even the overall measurement can be changed in this time. Not including these files in the mpd-file can cause some problems, because these parts can be totally misplaced, if the model is opened later (when the part is official).
To suppress this behaviour you can simply add these unofficial files to the mpd-file and it will look the same even if an unoffical part had become official in the meantime.
I hope this helps to understand Philo's thoughts.
/Max
Philo's second point means, that unofficial parts, which are used can be changed due to our certification process. That means the origin, rotation and shape or even the overall measurement can be changed in this time. Not including these files in the mpd-file can cause some problems, because these parts can be totally misplaced, if the model is opened later (when the part is official).
To suppress this behaviour you can simply add these unofficial files to the mpd-file and it will look the same even if an unoffical part had become official in the meantime.
I hope this helps to understand Philo's thoughts.
/Max