...
Select from the toolbar before dragging a label onto the diagram to create a multi-use label. Select before dragging to create a single use label. Labels are single use by default.
Draggable label and Drop-down list
All of the labels on the image can be set to either be a text label or a drop down list .
Drop down lists are only compatible with singel-use labels. Repeated labels can only be a text label.
Graphic Labels
Graphics can be imported at the same time as the main image to be used as labels in their own right. Graphical and text labels can be mixed in the same question. The question below shows the wolf spider being dragged to its correct location on the diagram.
...