A follower VTool can follow raster geometry to vectorize it, but prompts you for input when it reaches a decision point, where it can no longer proceed on its own (for instance, at a raster endpoint or a label). At each decision point, you can provide more information, change course, return to a previous vertex, or stop the follower. AutoCAD Raster Design toolset provides follower tools for vectorizing polylines. For more information, see https://beehive.autodesk.com/community/service/rest/cloudhelp/resource/cloudhelpchannel/guidcrossbook/?v=2023&p=RSTR&l=ENU&accessmode=live&guid=GUID-15882AA0-B3C8-4484-A3C4-9EAF769839D1.