XP Themes is a graphic style set in Windows XP. When activating XP Themes in the ASSD program, the old design changes to a design corresponding to XP Themes (e.g. buttons and page titles). XP Themes can be switched off via a program call with the help of parameters: e.g. "C:\assd\rb.exe NOXP" (switch on with XP). For page frames, e.g. the coloured page titles in the reservations form, XP Themes can also be switched on and off separately, in order to retain the colours of the page headers (menu settings. labels: FC, form (s_reser), detail2 – apply property settings: Y).