If you have line feature layers in your drawing, you can create new LineString and MultiLineString features.
To create a new LineString or MultiLineString feature
Create
New LineString feature_name.
Create
New MultiLineString feature_name. Here, feature_name is the name of the LineString or MultiLineString feature layer.
For more information, see MAPLINESTRINGCREATE and MAPMULTILINESTRINGCREATE.
The new feature is added to the Data Table. To add information to the feature, see To Edit Using the Data Table.