- An empty PARAM is equivalent to omitting the parameter; `!ARG' reads the
- parameter value from the argument; `v' is equivalent to `!+', as a
- convenient abbreviation and for Common Lisp compatibility. The `=ARG'
- notation indicates which argument(s) should be processed by the operation:
- the default is `=+'.
+ An empty PARAM is equivalent to omitting the parameter; `#' is the number
+ of remaining positional arguments; `!ARG' reads the parameter value from
+ the argument; `v' is equivalent to `!+', as a convenient abbreviation and
+ for Common Lisp compatibility. The `=ARG' notation indicates which
+ argument(s) should be processed by the operation: the default is `=+'