Here we discuss the one-space low pincer of .
is the most common answer to this move.
restricts White's space on the top side, but the corner is big enough. After this, Black can choose between a and b.
In general, Black will play b if there is a black stone at or near the star point at the left side, to make a wall facing this stone. If Black has no such stone, a is usually played, and Black will make some thickness towards the top side, taking sente.
In both cases, White takes the corner. Apart from , other possibilities are c, d, e, f and tenuki.
Follow the path through the variations: