It means that they should be able to go about their affairs confidently, knowing that they can count on their central bank to do whatever is necessary to keep future inflation low, stable, and predictable. In this way, they will be able to make sounder economic decisions, which will lead to better performance for the economy as a whole and to rising incomes.
Since the early 1990s, inflation in Canada has been low and stable. And economic activity has been expanding solidly over the past several years despite some major global disturbances. Of course, a low-inflation policy by itself is not sufficient.