The possibility to have repeatier server assign temperatures based on material selection, so when a part is sliced have no temperatures information such as
M104 S230 ;set head temp (no wait)
M190 S110 ;set bed temp (wait)
M109 S230 ;set head temp (wait)
in the gcode.
Then in repeatier server say I want to print with PLA, which will add temperature info to the start of the gcode. Hope this makes sense.