<strong>Preparing Software Re-Engineering via Freehand Sketches in Virtual Reality</strong> - Online Appendix

Online appendix for the paper "<b>Preparing Software Re-Engineering via Freehand Sketches in Virtual Reality</b>" published in the proceedings of the 39th IEE International Conference on Software Maintenance and Evolution (ICSME 2023).发表于第39届IEE国际软件维护与演化会议（ICSME 2023）会议论文集的论文《基于虚拟现实手绘草图的软件再工程准备》的在线附录。