Keywords in Standard ML:
abstype and andalso as case datatype do else end exception fn fun fun handle if in infix infixr let local noninfix of op open orelse raise rec then type val with withtype while
Comments in Standard ML: A comment is any character sequence within comment brackets (* *) in which comment brackets are properly nested. No space is allowed between the two characters which make up the comment brackets (* and *). An unmatched (* should be detected by the compiler.