I’m trying to create a free edge between two areas. This works to some extent using the following code:

```
+prog aqua urs:1 $ Materials
MAT 11 E 35000 GAM 25 MUE 0.3
end
+prog Sofimshc urs:2 $ Geometry
SYST 3D GDIV 100000 GDIR NEGZ
CTRL MESH 1
CTRL DELN 1
CTRL TOPO 0
CTRL EDRL 1
SPT 1 X 0 Y 0 Z 0
SPT 2 X 1000 Y 0 Z 0
SPT 3 X 1000 Y 0 Z 1000
SPT 4 X 0 Y 0 Z 1000
SPT 5 X 2000 Y 0 Z 0
SPT 6 X 2000 Y 0 Z 1000
SAR 1 MNO 11 GRP 11 T 100
SARB TYPE OUT NA 1 NE 2
SARB TYPE OUT NA 2 NE 3 FIX PX
SARB TYPE OUT NA 3 NE 4
SARB TYPE OUT NA 4 NE 1
SAR 2 MNO 11 GRP 11 T 100
SARB TYPE OUT NA 2 NE 5
SARB TYPE OUT NA 5 NE 6
SARB TYPE OUT NA 6 NE 3
SARB TYPE OUT NA 3 NE 2 !FIX PX
SLN 1 NPA 1 NPE 5 FIX F ! This doesn't work on node 2
END
+prog sofiload urs:3 $ Load
LC 1 TYPE 'None' TITL 'Vertical'
LINE AUTO PROJ N TYPE PZZ P1 -10 X1 1000 Y1 0 Z1 1000 $$
P2 -10 X2 2000 Y2 0 Z2 1000
end
+PROG ASE urs:4 $ ASE
LC 1
end
```

Unfortunately, the bottom node which is shared by the right and bottom edge is released from it’s bottom boundary condition as well.

How to I force this node to adhere to the fixity I apply on node 2?