As a divinatory line, six at the second place of Keeping Still reads within the hexagram's overall concern with resting like the back, so one loses all consciousness of self, walking in one's own courtyard and not seeing the persons in it, no error. The line occupies a place proper to its own nature in the classical doctrine that odd places favour a firm, yang line and even places favour a yielding, yin line. It is also one of the two central lines of the hexagram, the place classical reading treats as the most balanced regardless of the line's own character. Its own text, that keeping the calves of the legs still, unable to help the one whose lead he follows, his mind not at ease, is the particular fortune assigned to this one stage of the situation, not to the hexagram as a whole.
The second line corresponds by classical convention with the fifth line, and the two do not correspond here, since both lines share the same character. Read together with the trigram it belongs to, Gen in the lower position of the figure, the line marks the situation settling into its own character, still wholly inside the lower trigram, one stage in the six stage movement the hexagram traces from its first line to its last.
A change at this line, from yin to its opposite, is the mechanism the tradition uses to move from one hexagram to another. Flipping the second line of Keeping Still turns Gen into Xun while the other trigram, Gen, stays as it is, which yields Keeping Still's changing partner, Work on the Decayed (King Wen 18), the hexagram this line is recorded as transforming into.