The Accelerators are short cut keys. The Accelerators are formed by placing an ampersand before any of the characters of the Caption. As a product the letter following the ampersand will be underlined. The underlined letter alongside with the ALT key must be used to activate the Control. Pressing the ALT key and the equivalent letter key is equivalent to clicking the control with the mouse.
For illustrate if the caption is Command2 for the next command button, placing '&' before C in the caption as given & Command2, would display the caption as Command2. To activate the Command2 button you either click on the Command2 button or press the ALT and C altogether.