三
The reading
The sheet looks back only after something has been set down.
Yohaku
A margin is not empty. Write one thought. The field keeps what returns. The reverse answers.
Four first lines. Pick one up, or write your own.
The sheet is still
What returns often enough becomes a register mark. Corner. Cross. Sheet.
The field is unmarked. Set a thought on the sheet and returning families appear as tiles. Size is how often they come back.