All these Tabs have options alike:
If you activate the check “Don't generate code” then no code will be generated for each option.
The option “Icon for…” (Select, close, etc.) allow you to specify the icon that you want to force for all the corresponding buttons. This option is useful when you want to make a quick global icon change (or for when there is no icon at all). The icon will be assigned at runtime. When the button had no icon previously, it may happen that the button has no alignment specified; therefore, you have the “Left align” option. If this option is not activated and the button has default alignment, the icon will be centered and overlapped with the text (if there is any). In addition, if the button is very small, the text will be truncated. You may avoid this using the “Adjust minimal…” options, but keep in mind that the buttons will remain in the same relative place, so if you choose values too high the buttons will overlap on the window.
The “Button text”, if specified, allow you to specify a fixed text to replace the one in the corresponding kind of buttons.