### 10.6.1. Writing a Neutral Data File (*.xml)

An NDF file defines one or more blades. It can be read by BladeEditor and by BladeGen.

You can write an NDF file from BladeEditor in two ways:

- You can write an NDF file based on the blades that currently exist in BladeEditor.

  For details, see Exporting Currently Existing Blades to NDF Files.

- You can write an NDF file based on a CAD geometry.

  For details, see Exporting Blades from CAD Models to NDF or Script Files.

#### 10.6.1.1. NDF File Export Details and Limitations

- Sketch dimension is not supported

- Sketch constraint is not supported

- Parameterization is not supported

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