How can I erase lines or portions of drawings or deletion sections after drawn?
The developers of the TurboCAD application have a support page where you can see exactly how the Erase function works and how to delete various objects because lines are objects, just like any other element available within the application.
Use the following website to obtain additional information: http://www3.turbocadcommunity.com/tiki-index.php?page=Erase