Step-by-Step Guide:br br 1. Select Corridor: Choose the corridor to extract feature lines from.br 2. Extract Feature Line Tool: Access the "Extract Feature Line" tool.br 3. Choose Feature Line Type: Select the type of feature line to extract (e.g., centerline, edge).br 4. Set Feature Line Properties: Define feature line properties (e.g., name, style).br 5. Create Feature Line: Extract the feature line from the corridor.br br Benefits:br br 1. Streamlined workflow: Quickly create feature lines from corridors.br 2. Accurate design: Ensure precise feature line creation.br 3. Enhanced visualization: Visualize feature lines in 3D.br br Applications:br br 1. Road design: Create feature lines for road centerlines, edges, or other features.br 2. Highway design: Extract feature lines for highway design and analysis.br 3. Infrastructure design: Create feature lines for various infrastructure projects.br br Tips and Variations:br br 1. Use corridor baselines: Ensure accurate feature line extraction.br 2. Define feature line styles: Apply consistent formatting and appearance.br 3. Integrate with other Civil 3D tools: Use feature lines with other Civil 3D tools, such as surfaces and grading.