Recently dove into start code for 3D Printers, thought I'd gather some thoughts and useful links here:
G-Code definitions
http://makerbot.wikidot.com/gcode
https://reprap.org/wiki/G-code#M132_in_MakerBot
Sailfish specifics
http://www.sailfishfirmware.com/doc/sailfish.pdf?fbclid=IwAR2PT7_pcGxe505swBpi-ISxyagt3OsGOT0Ri8TJI80Mez79bxWCbGD_8vs
Start Code
https://forum.simplify3d.com/viewtopic.php?t=3156
https://community.ultimaker.com/topic/32744-better-method-to-using-replicator-2-printers-with-cura/
