Enigma code

what is a enigma code?
 A enigma code is a opening scene of a film. It is sometimes used to question and confuse the audience.  this can be done in a number of different ways, they can sometimes show a charatcter but not reveil the face or can show a shadow and not show the actual character or object. The purpose of this is to get the audience involved and to gt them thinking, and leaving a question in their mind so the film is still in thier memory. This is used at the begining of a film most of the time and could be connected with a cliff hanger which is also often used in films and both of theese are similar techniques used in films. An example of this is sdemonstrated in the Indiana Jones movie a blogged about earlier. It shows how for the most part of the start we are unable to fully distingush the charater.