that Lisp avoids infinite recursion on an ill-defined function.
@cindex Lisp nesting error
-The default value of this variable is 500. If you set it to a value
+The default value of this variable is 1000. If you set it to a value
less than 100, Lisp will reset it to 100 if the given value is reached.
@code{max-specpdl-size} provides another limit on nesting.