This option protects against the loss of structure calculation results when there are changes to the structure data saved in an *.RTD file, resulting in an Out of date structure calculation status.
The global status of the protection has three methods of implementation:
The Results menu contains a Frozen Results on/off toggle. Structure calculation results are blocked or unblocked, respectively. Frozen Results is only available when structure calculation results are present.
The Job Preferences tab in Structure Analysis contains the Automatic freezing of results option. When enabled, each time structure calculations are performed, results are automatically frozen. Automatic freezing is on by default.
When calculation results are frozen and you perform any operation that results in a change of structure data, you will be warned about the possible loss of available status of calculation results. If you accept, structure data changes are made and calculation results are unfrozen. If you decline, the structure changes will not be made and the result status will not change.