Drawing Compare Tool in Rhino for merging changes between Make2d drawings

  1. Make sure outputs of Make2D command are on separate (parent) layers.
  2. SelDupAll command can be used to select all elements that were not added/modified (it selects them on both drawings). Effectively Invert command then becomes a difference between them - new and modified elements.
  3. This advice from Mitch how to use SelDupAll to select duplicates from only one group (tldr: lock it)
  4. This script by Pascal may be used to tag (set user text) to all objects in a file although Make 2D conveniently enough puts all objects into a separate “layer stack” already.