You drag the freeze bar to freeze features.
For frozen features with out-of-date external references, SOLIDWORKS prompts you to
lock the external references. You can lock the external references or manage the
external references as locked for the current session.
SOLIDWORKS does not update locked external references during a
rebuild. As a result, the model is not marked out-of-date.
To turn on the freeze bar, click and select Enable Freeze
bar.
To freeze features: