If you are unfamiliar with tree structures, please refer to Figure 12.1 for a diagram of tips, nodes and labels.
Show tip labels: This refers to labels on the tips of the branches of the tree. Tip labels can be any of the ﬁelds on your document, and can be set in the Display option. To select multiple ﬁelds to display at the tips, hold down the command/control key while selecting.
Show node labels: This refers to labels on the internal nodes of the tree. If you are viewing a consensus tree, you can display consensus support % here, or you can display the node heights.
Show branch labels: This refers to labels the branches of the tree. You can display substitutions per site (branch lengths) here, or for a consensus or bootstrapped tree you can display consensus support % or bootstrap support %. Checking “show next to node” will move the labels from the middle of the branch to adjacent to the node.
For node and branch labels, the font can be set using the Font Size options in the tab. The tree viewer will shrink the font size of some labels if they cannot all ﬁt in the available space. The lower end of the range speciﬁes the minimum size that the tree viewer is allowed to shrink the label font to. The font sizes for the tip labels are set using the Font button in the toolbar above the tree viewer. Signiﬁcant Digits sets how many digits to display if the value the node is displaying is numeric.