Customizing the metamodel : Keywords for USRPROPS : LISTONLY
  
LISTONLY
Enables the user to make one selection from the choices provided by the predefined list, and prohibits the user from typing in a new selection. They must choose from the predefined choices.
If the List is four values or less, the ListOnly List box will be a list of radio buttons.
If the List is five values or more, the ListOnly List box defaults to a drop-down list.
Example
List "whatever" { Value "red" Value "blue" Value "indigo" Value "violet" Value "green" << --------- If a fifth value is added to list, list becomes drop-down (see below) }
Definition "Use Case" { PROPERTY "New Property" { EDIT Text LENGTH 12 ListOnly List "whatever" } }