Xtool -dd: Deduplication Option

It is important to distinguish this command-line utility from or xTool Studio , which are GUI-based design software for laser engravers and cutters. While the software for laser machines handles "layering" and "path planning," it does not use a -dd command-line flag for data deduplication. xTool Studio - laser software full walkthrough

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In newer versions of Xtool (such as the 2020 project), the deduplication code has undergone significant changes. Some older deduplication methods were time-consuming to port, leading to differences in how -dd behaves between legacy and current versions. xtool -dd deduplication option