The following snippets reveal its simplicity.

Steve

'-- Standard Enum
Public Enum DeniedActions as Integer
  NoMessage = 0
  ReplaceEachCharacter = 1
End Enum

'-- Localized Enum
Public Enum DeniedActions as Integer

  <EnumDisplayValue("IVANEnum - Message", True) > _
  NoMessage = 0

 <EnumDisplayValue("IVANEnum - Replace", True) > _
  ReplaceEachCharacter = 1
End Enum

Attribute Constructor
 New(ValueorKey as String, IsLocalizationKey as Boolean)

Would it be possible to declare Enum members as SF localizable keys ?