Take F7=Fields on this screen to access fields on Synon
Note the F10 key on above screen to Define Field.
When we take Z, we can see details of the field
Field details specify the properties of a given field, such as length, text, validation, and implementation name.
Take F9=Conditions on the above screen to see conditions of a field
Now take F10=Define Field on main field screen to create a field
Field Types