OSB.DAT

From GHER

OSB.DAT is the file describbing the number of boundary conditions, their names, positions and orientation (ex : E=going east)

example

'DANUBE' 25 102 25 102 'E'
'DANUBE2' 50 102 50 102 'E'
'DNEPR' 94 135 94 135 'S'
'DNEPR2' 94 130 94 130 'S'
'BOSPHOR' 42 4 42 4 'N'
'BOSPHOR2' 42 10 42 10 'N'

Another example with wider boundaries (so that you can see where to put start and end points)

'LEFTIN'  2 2 2 79 'E'
'RIGHTOUT'  179 2 179 79 'W'
'POWERIN'  60 2 60 2 'N'
'POWEROUT'  120 2 120 2 'N'