pair-links.md
In ggalign: A 'ggplot2' Extension for Composable Visualization

pair_links can create multiple valid link pairs

<ggalign_pair_links>
A total of 9 pairs of link groups

                     hand1 ~ hand2                 
  1:                   1:2 ~                       
  2:                I(1:2) ~                       
  3:                       ~ 3:4                   
  4:      range_link(1, 5) ~                       
  5:  range_link("a", "c") ~                       
  6:      range_link(1, 5) ~ waiver()              
  7:              waiver() ~ 1:2                   
  8:                       ~                <empty>
  9:                       ~ list(1, I(2))

A total of 10 link groups