It is hard to decide what input type is required (for example the Y/N as option list) so we need a way to give some more information
When a user has to select which input type to use for a field it is hard to get information about which one is required, for example when to use Yes/No and when to use Yes/No as Option List. The only way to find out is to ask someone who happens to know or check in the code. We need to think of a way to provide some information to the user to help him/her in the choice of what input type to use.