Hello I think it is cannot be a problem to indicate if the text file will execute or not: the Tracker can add a small "Be Application" icon in the button-right corner to the default file icon if the file type is text/* and the file has executable permission set. This would work as the same way as the space bar on the disk icons. Of course, the Tracker can popup an alert before the executable text file will open to get a comfirmation from the user. dsjonny