Feature type: river
Segment grid: 7A4-7A5
"Cap." (for "caput," a regular Latin term for the source of a river) is only used on the map for the three rivers in this vicinity, #85A, 85B, 86. In the first two instances the purpose is perhaps to signify that the river should be understood as flowing down the map, not up. The same may apply in the third instance, too, although there is hardly comparable need for this clarification.