The pidgin/lingua-franca used at Deaflympics, World Federation of the Deaf congresses, and cross-border Deaf meetings. Draws on ASL, BSL, JSL, KSL, CSL, Taiwan Sign, Auslan, NZSL, ISN, LSF, DGS, LSE, LIS, NGT & many others. Iconic visual-spatial grammar, classifiers, role-shift, non-manual markers, brow-raise grammar — plus a deep Interrogative Questions in Sign sweep: WH-handshapes, brow-furrow vs brow-raise NMM, yes/no, tag, choice, indirect, echo & rhetorical Q, with side-by-side comparisons across 13+ sign languages.