Factored default specifications are not supported.
For example, a statement such as the following is not supported:
default ( range(a:h), range(p:z) ) fixed bin;
But you could change the above statement to the following equivalent and supported statement:
default range(a:h) fixed bin, range(p:z) fixed bin;
The use of a "(" after the DEFAULT keyword is reserved for the same purpose as under the ANSI standard: after the DEFAULT keyword, the standard allows a parenthesized logical predicate in attributes.