Definition(en): These are output files of CloudCompare, which is free, open source software, which undertakes 3D point cloud processing (similar to those obtained with a laser scanner). The development of CloudCompare began in 2003, stemming from the PhD of Daniel Girardeau-Montaut. CloudCompare was developed in C++ with Qt, and is available on Windows, Linux and Mac OS X platforms, both 32 and 64 bit.