STFax utilise the excellent MUI bubble help feature. If you hold your mouse pointer stationary over certain gadgets, after a few moments a speech bubble will present a short statement of the function of that gadget.

You can control the use of the bubble help within MUI prefs. Within MUI prefs goto the "System" option and then alter the sliders to suit your needs. You can switch off the bubble help by moving both sliders to the left so they are set to zero.