What it means for in the data from ExportNavigationData

AE 0 4 10570.657227 11610.657227
Av 2047.770752 0.000000 16946.744141
Av 1989.092896 0.000000 16842.070313
Av 2869.096436 0.000000 16348.751953
Av 2927.775391 0.000000 16453.425781

How to read this data for recast detour source codes in some formats?It seems be the data export from navmesh modifier.How to add this into the bin builded from recastDemo?Do someone have any idea?
Thank you very very much!