En este libro, la autora explora cmo una serie de obras poticas chilenas configuran una representacin de la marginalidad donde se visibilizan proyecciones simblicas y libidinales de la comunidad social. La marginalidad, entendida como categora discursiva en dilogo con manifestaciones culturales y sociales de diversa naturaleza, se transforma as en un espejo en el cual tanto los lectores como los crticos son llamados a mirarse. Transitando de Diamela Eltit a Juan Carreo, Martina Bortignon delinea tres momentos de la relacin entre poesa y margen. En la dictadura, prevalece la coincidencia entre el sujeto de la enunciacin y unos personajes marginales que testifican desde la huella de sus corporalidades. Con la recuperacin de la democracia, se observa la desarticulacin de la mirada pblica sobre el marginal por medio de un retrato potico agresivo o sensualmente deslumbrado de ste. En la dcada del 2000, el imaginario asociado al margen es manipulado para sabotear la atribucin de identidades fijas. Margen, espejo es un libro provocador e inteligente que, a travs del prisma de la creacin potica, interroga con lucidez al Chile reciente. ~ In this book, the author explores how a series of Chilean poems configure a representation of the margins that display symbolic and libidinous projections of the community. The margin, understood as a discursive category in dialogue with cultural and social expressions of a diverse nature, thus becomes a mirror in which both readers and critics are called to look at themselves. Going from Diamela Eltit to Juan Carreo, Martina Bortignon outlines three moments in the relationship between poetry and the margins. In the dictatorship, the convergence between normative and marginal characters prevails, and these testify from the imprint of their bodies. With the recovery of democracy, the deconstruction of the public gaze on the marginal is observed through an aggressive or sensually dazzled poetic portrait. In the 2000s, the imaginary associated with the margin is manipulated in order to sabotage the attribution of fixed identities. Margen, espejo is a provocative and intelligent book that lucidly interrogates contemporary Chile through the prism of poetic creation.