Leaderboard

Same topic as this, just a different dxf filter... use code 1 as opposed to code 2: https://www.cadtutor.net/forum/topic/73536-add-if-not-in-list/

A quick Google search for "insert block vertices AutoCAD Lisp" returns 84 results https://www.google.com/search?q=insert block vertices AutoCAD Lisp Picking those polylines highlights square grips on each of those vertices. Wouldn't that help? GRIPS (System Variable) https://help.autodesk.com/view/ACD/2022/ENU/?guid=GUID-97AD30F3-A1A3-4027-91B7-49008841A447 Value Description 0 Hides grips 1 Displays grips 2 Displays additional midpoint grips on polyline segments To adjust the size of the grips and the effective selection area used by the cursor when you snap to a grip, use GRIPSIZE (System Variable) https://help.autodesk.com/view/ACD/2022/ENU/?guid=GUID-5F355F5F-0DDE-49B4-B253-C6BA717BAF8B

Bit hard with nothing to look at need sample dwg.