@cindex atoms
Because cons cells are so central to Lisp, we also have a word for
-``an object which is not a cons cell.'' These objects are called
+``an object which is not a cons cell''. These objects are called
@dfn{atoms}.
@cindex parenthesis
A @dfn{primitive function} is a function callable from Lisp but
written in the C programming language. Primitive functions are also
called @dfn{subrs} or @dfn{built-in functions}. (The word ``subr'' is
-derived from ``subroutine.'') Most primitive functions evaluate all
+derived from ``subroutine''.) Most primitive functions evaluate all
their arguments when they are called. A primitive function that does
not evaluate all its arguments is called a @dfn{special form}
(@pxref{Special Forms}).@refill