According to Werner Wolf, metafiction can be differentiated into four pairs of forms that can be combined with each other.
Explicit and implicit Explicit metafiction is identifiable through its use of clear metafictional elements on the surface of a text. It comments on its own artificiality and is quotable. Explicit metafiction is described as a mode of telling. An example would be a narrator explaining the process of creating the story they are telling. Rather than commenting on the text, implicit metafiction foregrounds the medium or its status as an artifact through various, for example disruptive, techniques such as
metalepsis. It relies more than other forms of metafiction on the reader's ability to recognize these devices to evoke a metafictional reading. Implicit metafiction is described as a mode of showing.
Direct and indirect Direct metafiction establishes a reference within the text one is just reading. Contrarily, indirect metafiction consists in metareferences external to this text, such as reflections on other specific literary works or genres (as in parodies) and general discussions of an aesthetic issue. Since there is always a relationship between the text in which indirect metafiction occurs and the referenced external texts or issues, indirect metafiction always impacts the text one is reading, albeit in an indirect way.
Critical and non-critical Critical metafiction aims to find the artificiality or fictionality of a text in some critical way, which is frequently done in
postmodernist fiction. Non-critical metafiction does not criticize or undermine the artificiality or fictionality of a text and can, for example, be used to "suggest that the story one is reading is authentic".
Media-centred and truth- or fiction-centred While all metafiction somehow deals with the medial quality of fiction or narrative and is thus generally media-centred, in some cases there is an additional focus on the truthfulness or inventiveness (fictionality) of a text, which merits mention as a specific form. The suggestion of a story being authentic (a device frequently used in
realistic fiction) would be an example of (non-critical) truth-centred metafiction. == See also ==