What does Robert Lang’s TreeMaker program help origami artists do?

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Red origami crane with outstretched wings and pointed beak, displayed against a solid black background. — origami An origami crane.

Robert Lang’s TreeMaker program is a computer program designed to assist origami artists in the precise folding of bases. It is a tool that helps folders achieve the high level of technical accuracy required for complex designs, such as creatures with multiple legs and antennae.1