Star-chart

The Jedi Order maintained many star-charts which showed the location of legendary Force vergences, though by the time of the Galactic Empire, many of the known vergence star-charts were clever fakes. Authentic star-charts that were recovered during the era were thousands of years old, rendering them nearly impossible to interpret.

During the Galactic Civil War, the Empire programmed Bledsoe's disease to carry among symptoms a "window-effect" in the afflicted's eyes (resembling stars in people's eyes), with an ocular scan to retrieve the window-effect's star charts. This was to act as a subtle means of supplying intel on Rebel bases to various Imperials so they could locate and take them out.

Hugo Bartyn managed to delete the coordinates of the Lamaro system from most star-charts.