Introduction / Diane Brentari -- Transmission of sign languages in Northern Europe / Penny Boyes Braem and Christian Rathmann -- Transmission of sign languages in Latin America / Claire Ramsey and David Quinto-Pozos -- Transmission of sign languages in the Nordic countries / Brita Bergman and Elisabeth Engberg-Pedersen -- Transmission of sign languages in Mediterranean Europe / Josep Quer, Laura Mazzoni and Galini Sapountzaki -- Transmission of sign languages in Africa / Dorothy Lule and Lars Wallin -- Transmission of Polish sign systems / Piotr Wojda -- Notation systems / Harry van der Hulst and Rachel Channon -- Verb agreement in sign morphology / Gaurav Mathur and Christian Rathmann -- Functional markers in sign languages / Sandro Zucchi, ... [et al.] -- Clause structure / Ronice Müller de Quadros and Diane Lillo-Martin -- Factors that form classifier signs / Elisabeth Engberg-Pedersen -- Handshape contrasts in sign language phonology / Diane Brentari and Petra Eccarius -- Syllable structure in sigh language phonology / Tommi Jantunen and Ritva Takkinen -- Grammaticalization in sign languages / Sherman Wilcox, Paolo Rossini and Elena Antinoro Pizzuto -- The semantics-phonology interface / Ronnie B. Wilbur -- Nonmanuals : their grammatical and prosodic roles / Roland Pfau and Josep Quer -- Sign languages in West Africa / Victoria Nyst -- Sign languages in the Arab world / Kinda Al-Fityani and Carol Padden -- Variation in American Sign Language / Ceil Lucas and Robert Bayley -- Sociolinguistic variation in British, Australian and New Zealand Sign Languages / Adam Schembri, ... [et al.] -- Variation in East Asian sign language structures / Susan Fischer and Qunhu Gong -- Crosslinguistic variation in prosodic cues / Gladys Tang, ... [et al.] -- Deixis in an emerging sign language / Marie Coppola and Anne Senghas -- The grammar of space in two new sign la