This ClearCase SCM Adapter preference specifies ClearCase behavior when a file that is not checked out is edited in Eclipse. For example, the process of refactoring can change several files in this way.
If you want to check the file out without being notified, select Automatically checkout. If you do not want to check out the file, select Do nothing.
Related tasks
Checked in files are edited by an internal, interactive editor
Checked in files are saved by an internal editor
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