The tool results for most ArcToolbox tools has the "Close this dialog box when completed successfully" option, which is very nice.
However, on occassion, the user wants the process box to stay open after a tool has completed successfully - in order to review the messages posted by the tool. If the tool runs very quickly it is often difficult to find and uncheck the box within the amount of time available before the tool completes.
It would be a nice option if the "Close this dialog box when completed successfully" was present prior to the tool being run, maybe next to the "OK" and "Cancel" buttons. This would allow the user to choose if the final dialog stayed open prior to running the tool.