Any links that both start and end at items within the main timeline are drawn.
- Link labels are never drawn (regardless of link label visibility settings).
- Links between items at different outline levels will be drawn.
Links ignore timeline bands - the link line simply links across the band(s) as required.
Links are drawn in using $TimelineBandLabelOpacity.
From v6.5.0, links are drawn between notes and descendants, and not just siblings as previously. Thus a link is drawn if source and destination of the link are both within the main timeline (i.e. excluding sidebar listings).