There are several iterations floating around, but this one is oriented to some legacy models; really good insights here.
http://www.fujifilm.com/products/di..._x_t1_x_e2s_x_e2_x_t10_x70_af_handbook_01.pdf
http://www.fujifilm.com/products/di..._x_t1_x_e2s_x_e2_x_t10_x70_af_handbook_01.pdf