Current: 1.3.0 | Development: 1.3.1 | Slic3r is an open source toolpath generator for 3D printers | https://slic3r.org/ | https://manual.slic3r.org/ | Automated 1.3.1-dev builds: https://dl.slic3r.org/dev/ | GSoC students: ask and wait. | There's no place like G28.