Adds the option to have parameters in Macros and show a dialog to the user on execution to change them.
Here's and example:
PID_CALIBRATE
HEATER={label:Heater, default:extruder, options:extruder|extruder1}
TARGET={label:Temperature, unit:°C, default:190}
WRITE_FILE={label:WriteFile, default:0, options:0|1}