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Want to work with a 2D polyline but for some reason your drawing contains a 3D polyline instead?
Applying the "LCAD_FLATTEN" command to a 3D polyline will replace a 3D polyline with a 2D polyline.
The X and Y geometry will be preserved and the resulting 2D polyline will be placed at a user-specified elevation.
If you need to convert several 3D polylines within a drawing, multiple 3D polylines can be selected and "Flattened" at once.
From version 2.0 onwards, the reverse is also possible. Using the command "LCAD_RAISE" 2D polylines can be converted into 3D polylines.