the alignment will have a secondary structure line shown below it,
and a number of additional options become available:
<ul>
- <li><a href="../colourschemes/rnaHelicesColouring.html">RNA
+ <li><a href="../colourSchemes/rnahelicesColouring.html">RNA
Helix colouring</a> - highlights columns of alignment involved in
particular RNA helices, Uses the first displayed secondary
structure annotation.</li>