Sentence:  [T]he new standard should encompass "other" media, such as video, audio (both captured and synthetic), and in principle be extensible to new modalities such as <WSD>haptic</WSD> output and speech or gestural input, which have become increasingly integrated within graphics applications; ... 
Meaning of the word marked with <WSD> tags:  Of or relating to (the study of user interfaces that use the sense of touch).