hebackus

Corridors, baselines, regions, assemblies, subassemblies, corridor surfaces

Custom subassembly .NET design — CorridorState, SubassemblyGenerator, targets, SATemplate

Stock-subassembly pattern catalog — need→file index, worked DrawImplement recipes, point/link/shape code reference, mined from Autodesk's 120 VB stock subassemblies

Superelevation design, attainment, cross slope, pivot points, lane config

Block definitions, references, attributes, dynamic block properties, exploding

Dimensions — aligned, rotated, arc, radial, angular, ordinate, text overrides

Dynamic text fields — field codes, evaluation, embedding in MText/attributes

Points, vectors, matrices, curves, planes — transforms, intersections, recipes