Figure 1.

Various layout options for drawings in RNAcanvas. (A) The same input structure as in (B, left) before any layout adjustments save for being rotated 90°. (B) Labels a-n and dashed line (lower right) added in Adobe Illustrator. (a) Flat outermost loop. (b) Rotated flat outermost loop. (c) Round outermost loop. (d, e) Round inner loops. (f, g) Flattened inner loops with multiple child stems. (h) Flattened inner loop with only one child stem that has been condensed. (i) Flattened inner loop with only one child stem that has been stretched. (j-m) Flipped stems. (n) Termini gap of the round outermost loop (indicated by dashed line).