I have just learned from the R Language Definiation ##Operators are special functions # Examples "<-"(x,1:6) "["(x,3) "+"(3,5) '-'(3,6) '/'(3,6) '*'(3,6) ----- A R learner. -- View this message in context: http://r.789695.n4.nabble.com/Using-as-a-function-tp2307292p2312424.html Sent from the R help mailing list archive at Nabble.com.