Field help (DEMASWTYP) 

The answer type is used to introduce standardization to the entry of the answer parameters.
The answer can be: alphanumerical, numerical, date, yes/no
The answer type conditions the entry of the various elements of the answer.
If the answer type is "date" or "yes/no", the control type and off standard answer sections cannot be entered.
Furthermore, the control table, the range and the default answer must be of the same type (alphanumerical or numerical) as the answer type.