Body language that exist in all languages. Body language, on the other hand, does not have a grammar system and must be interpreted broadly, instead of having an absolute meaning corresponding with a certain movement, so it is not a language like sign language, and is simply termed as a "language" due to popular culture. In a community, there are agreed-upon interpretations of particular behavior. Interpretations may vary from country to country, or culture to culture. On this note, there is controversy on whether body language is universal. Body language, a subset of nonverbal communication, complements verbal communication in social interaction. In
Pattern language coauthored a paper with Michael Mehaffy arguing that there are deep relationships between wikis and pattern languages, and that wikis "were in fact developed as tools to facilitate efficient sharing and modifying of patterns". Pattern language A pattern language is a method of describing good design practices or patterns of useful organization within a field of expertise. The term was coined by architect Christopher Alexander and popularized by his 1977 book "A Pattern Language". A pattern language can also be an attempt to express the deeper wisdom of what brings aliveness within a particular field of human endeavor, through a