The arrangements of lines in the Smarthouse for the three multiline experiments. Each cell in a diagram represents a subplot. In experiment 1, each colour corresponds to a line and adjacent subplots have the same colour. In experiments 2 and 3, blue corresponds to a line that is replicated twice, grey to a line that is unreplicated and green and yellow to the two parent lines; subplots for the same line have the same number, except for the unreplicated lines for which the subplots form main plots in the same manner as for the other lines. Blocks are indicated by thick black lines.