#introduction  the first section of a communication
  supertype:  #section__subdivision  a self-contained part of a larger composition; "he always turns first to the business section"; "the history of this work is discussed in the next section"
  part of:  #narration  #address.speech_act
  subtype:  #opening.introduction  the initial part of the introduction; "the opening established the basic theme"
     subtype:  #salutation  word of greeting used to begin a letter
  subtype:  #foreword__preface__prolusion  a short introductory essay preceding the text of a book
  subtype:  #preamble  a preliminary introduction to a statute or constitution (usually explaining its purpose)
  subtype:  #prologue  an introduction to a play

No statement uses or specializes #introduction; click here to add one.