# Cleaning DXF or DWG Files

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<summary>How do I clean DXF or DWG in Lite?</summary>

To clean DXF or DWG in Lite you have to specify its original units first. Then mark the regions you want to generate on, optionally exclude some regions like pillars or core of the building using include/exclude toggle and polygon.rectangle tool. At last, draw the spine of circulation using the circulation tool. Save the progress and you're ready to generate.

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