Definitions of Dramaturgy.

1] the art or technique of dramatic composition and theatrical representation
           http://www.merriam-webster.com/dictionary/dramaturgy
2] the art of the theater, especially with regard to the techniques involved in writing plays
           http://encarta.msn.com/dictionary_1861606441/dramaturgy.html
3] the art, craft, or techniques of dramatic composition
           http://www.definitions.net/definition/dramaturgy

Gotthold Ephraim Lessing