Prompts you to write a comment for the operation (and may present other options related to the operation) when you check in a versionor add one to source control.
Clear the option to omit the prompt.
Select this option to omit the comment prompt on checkin and have the checkout comment applied to the checkin.
Makes Preserve file modification time in the Check In and the Add to Source Control windows the default setting when you add a view-private file or directory to source control or check in a version.