message: Exclusive scan "and" should be "add"
diff: @@ -4155,7 +4155,7 @@ If called when none of the program instances are running,
  ``reduce_equal()`` will return ``false``.
  There are also a number of functions to compute "scan"s of values across
  -the program instances. For example, the ``exclusive_scan_and()`` function
  +the program instances. For example, the ``exclusive_scan_add()`` function
  computes, for each program instance, the sum of the given value over all of
  the preceding program instances. (The scans currently available in
  ``ispc`` are all so-called "exclusive" scans, meaning that the value
  