To ensure that certain features cannot be modified at a later time,.you can
make them read-only.
The dimensions, attributes, scheme, and so on of read-only features can not be
modified and are not regenerated when the part is regenerated. However, you can
add features to the parts that intersect the read-only features.
When you make a feature read-only, Pro/ENGINEER makes it, and all the features
that came before it in the regeneration list, read-only.
1. Select the feature in the Model Tree or in the graphics window.
2. Click Edit > Read Only. The R-ONLY FEAT menu appears.
3. Click one of the following commands:
* Select—Pick a feature to make it and all previous features read only.
* Feat Num—Enter a feature external identifier to make it and all previous
features read-only.
* All Feat—Make all features read-only.
* Clean—Remove the read-only setting from the features.
1. Click Done/Return.