| name | data type | description | 
|---|---|---|
| LineDirection | array of LineDirectionStructure | 
Example
{
  "LineDirection" : [ {
    "LineRef" : {
      "value" : "..."
    },
    "DirectionRef" : {
      "value" : "..."
    }
  }, {
    "LineRef" : {
      "value" : "..."
    },
    "DirectionRef" : {
      "value" : "..."
    }
  } ]
}