The fast print G-code includes much more aggressive acceleration settings, allowing the printer to reach higher speeds quicker and maintain them, contributing to faster printing.

Most of our beloved tools, such as Slic3r, Cura or KISSlicer, offer scripting interfaces that help a great deal if your existing 3D printing toolchain has yet to learn how to produce decent results ...

In fact, when it comes to 3D printing in particular file sizes can get awfully large. Partly to address this, Prusa have proposed a new .bgcode binary G-code format.