MIN-VAL (numeric) This property sets the lowest value of the range of legal scroll bar values. The default value is "0" (zero).
MAX-VAL (numeric) This property sets the highest value of the range of legal scroll bar values. The default value is "100". MAX-VAL may not be greater than 65536. Setting a larger range has an undefined effect. See PAGE-SIZE below for additional information.
PAGE-SIZE (numeric) This property describes the number of elements that appear on a "page" of data. For example, if you scroll through a series of lines and 20 lines fit in the window, then the page size is "20". With a 32-bit runtime, this property determines the size of the slider relative to the scroll bar. If PAGE-SIZE is set to "0" (the default), then the system uses a default slider size. PAGE-SIZE also reduces the range of values that the scroll bar can take. The effective range is MIN-VAL to MAX-VAL minus PAGE-SIZE.