I'm interested in writing a program to output G-Code for a class of objects that doesn't really come out good enough after being imported into my CAD package, exported to stl, and then sliced. I've found the Marlin site and have been studying the list of commands. I'm assuming that since Marlin is an Open Source code base that the Prusa i3 Mk3's firmware uses, that the Mk3 supports all of the Marlin commands.
... or am I deluding myself?
Specifically, I'd like to write my code using the G5 command (Bezier cubic splines). Will the Mk3 understand my GCode using G5's? If not... what will happen? Will it just ignore them or will bad things happen?