A reebok was tied behind his saddle and Jan Boom was carrying the carcase of a klipspringer, and a few unconsidered trifles in the way of partridges.

Dirt beds are common among the coal measures.

Fog from the river rolled up the street and the windows were grimed by soot, but Cartwright had not turned on the electric light.

What actually happens is that the CNP programmer uses the tools for dynamic control to achieve, without procedurally specifying any algorithm, a behavior of the standard interpreter that corresponds to the desired heuristic or other more advanced search strategy.