Yet at the same time, as its label suggests, verb agreement in sign languages follows the same syntactic restrictions as in spoken languages: in all languages, verbs may agree only with indexically identifiable properties of their subjects and objects person, number, and gender in spoken languages; referential indices in sign languages.    From Wordnik.com.  [Cool Linguistics Stuff] Reference

Choosing series, in which "players" take turns indexically indicating their selection of one of three possible parallel linelike vegetables - carrots, beans, rhubarb, etc.    From Wordnik.com.  [LA Weekly | Complete Issue] Reference

˜I,™ ˜here,™ ˜now™) reference has led some (Kaplan 1979, Perry 1977) to maintain that the content of our states of mind cannot always be constituted by Fregean senses but must be seen as consisting partly of the very objects in the world outside our heads to which we refer, demonstratively, indexically ” another source of support for an ˜externalist™ view of mental content, hence, of intentionality.    From Wordnik.com.  [Consciousness and Intentionality] Reference

(other than indexically ” e.g.    From Wordnik.com.  [Higher-Order Theories of Consciousness] Reference