How do I ensure that feature labels are always displayed below or inside a DNA map?
When feature labels are crowded, SnapGene may display some of them above a linear map or outside a circular map. You can force all feature labels to display below or inside a map. Choosing this option may cause some of the feature labels to be hidden.
Click SnapGene → Preferences (macOS) or Edit → Preferences (Windows or Linux), and select "DNA" in the sidebar.
Check the option "No feature names outside or above a map except point feature names".
Note that this setting applies to all existing and new DNA sequences.
Feature labels that do not fit in the display area will be hidden. To see more feature labels, either reduce the font size or enlarge the SnapGene window.