Here's an example: I use WorkRave to remind myself to take breaks. If I open the preferences dialog, I can close it by pressing Close, clicking the X in the cor

Here's an example: I use WorkRave to remind myself to take breaks. If I open the preferences dialog, I can close it by pressing Close, clicking the X in the corner or pressing Esc. No matter what I do, my changes are saved. In Windows the guideline is to use Ok & Cancel buttons while most of the GTK apps I've seen use just a Close button. GIMP is a mixed experience: most dialogs have both buttons while others just the close button.