How are annotations stored (what format?
Annotations are stored in an XML-based format which describe the parameters specified when the label is drawn. Coordinates are stored in microns so that lengths and areas can be calculated without any conversion. When a boundary contour is drawn, there are several parameters which pertain not only to what is drawn, but what the region indicates, and how it behaves. Other labels such as arrows store the range of magnifications at which the arrow should be drawn. An arrow drawn at the low magnification gross view isn’t useful when viewing the region at the cellular level. The architecture of the viewer allows any number of annotation tools to be added in the future. The annotation format is designed to grow as new annotation tools are needed.
