U.S. DEPARTMENT OF THE INTERIORBUREAU OF LAND MANAGEMENT
NOT File Data - Lines to not display or intersect
This file is a simple format which could be incorprotated into the ADD file.
The only addition to ADD format that would be required to accommodate IRR is the addition of the Do_Not_Display_line_GCDB_ID_from/to.
This could be, say a 0 code value attached to the GCDB_IDs of the line endpoints.