Possible enumeration values:

NameValueDescription
Checkbox

0

specify that the sepcial option is just a flag

DateTime

1

specify that the special option is a Date/Time

DateTimeRange

2

specify that the special option is a Date/Time range

Value

3

specify that the special option is a value

ValueRange

4

specify that the special option is a value range

PredefinedValue

5

specify that the special option has Predefined Values