I created these images to make mirror trees on Ancestry more manageable. The icons visually help show known paths, ancestors, possible ancestors, and matches. The X icon is especially useful if a branch is a known dead-end.
Tree tip: I tend to use a match’s username as first name, Ancestry as their last name, and cMs/segments as their suffix. I can easily find matches in a tree by looking at Ancestry surname and quickly get their cMs too.
Update 04/09/2018: Added maternal/paternal MRCA, maternal/paternal Ancestor icons. Also added Adoptees Welcome icon for Ancestry/23andMe profile pics (for those willing to help adoptees).
Update 03/21/2016: Added maternal and paternal DNA Match icons.