Use the Default History Settings from the Options DialogUses the global history settings from the Revision History page of the Options dialog box. Remove the checkmark from this option to select custom history settings for this VI.
Add an Entry to the History Every Time the VI is SavedAutomatically generates a comment in the History window if you change this VI and save it.
Prompt for History Comment When this VI is ClosedPrompts you to add a comment to the History window if you made any changes to this VI since you opened it, even if you already saved those changes. This option is useful if you enabled auto-save and you do not want LabVIEW to prompt you for a comment every time the VI saves automatically.
Prompt for History Comment When this VI is SavedPrompts you to add a comment to the History window if you made any changes to this VI since you last saved it.
Record History Comments Generated by LabVIEWAutomatically generates a comment in the History window when you save this VI if LabVIEW made any automatic changes to the VI, such as recompiling the VI for a new version of LabVIEW.
View Current Revision HistoryDisplays a history of comments saved with this VI.