Hi, there is a extra pair of braces needed in folllowing definitions, otherwise all following i and j are dotless. -\unexpanded\def\mathdotlessi {\mathdotless i} -\unexpanded\def\mathdotlessj {\mathdotless j} +\unexpanded\def\mathdotlessi {{\mathdotless i}} +\unexpanded\def\mathdotlessj {{\mathdotless j}} Wolfgang