White 1 and 3 in this diagram are also possible instead of bending at 3 in the previous diagram. If Black plays for the outside influence, White will be quite satisfied with gaining a very large territory in the corner.
Black therefore should save the corner with 3 and 5. If White moves out with 6 ,Black will fight back the Whites by pushing at 7.
It is also conceivable for Black to develop the lower side with moves from 2 to 8 instead of bending at 4 in Diagram 6.