Playwright and performer Deb Margolin's contributions to contemporary American theatre over the course of her now 25-plus year career have been eclectic. In the 1980s and early '90s she performed with Peggy Shaw and Lois Weaver as the feminist performance troupe Split Britches, for which Margolin did much of the writing, based on the trio's improvisations and experiments. In the interstices of her work with Split Britches, Margolin built her own career as a solo performer and playwright. In her autobiographical Index to Idioms, premiered in 2005, and in conversation with Jill Dolan, Margolin addresses her process, politics, and pleasures in performance and playwrighting.