Four kinds of information a writer must document are: Direct quotations, summary of a discussion, common knowledge information and writer constructs a diagram from data provided by others. These kinds of information are essential for a writer to document.
Jocasta has gone to Lycean Apollo to ask for help to find “some way of cleansing what corrupts [Thebes].” She has gone to ask the gods for help in the problem of the plague and Oedipus's potential guilt.