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Continue to ChatQuery : What software can create and annotate a 3D model's outline? One problem perhaps eternal for the beginners: how to create and annotate an image like this one. The image contains hidden lines https://vmapp.org/query/57623/What-Software-Can-Create-And-Annotate-A-3D-Model-S-Outline-One-Problem-Perhaps-Eternal-For-The-Beginners-How-To-Create-And-Annotate-An-Image-Like-This-One-The-Image-Contains-Hidden-Lines/