component sspindle          "subvert spindle to MPG control";
pin in  float req_rpm       "requested rpm";
pin in  float mpg_rpm       "mpg rpm";
pin out float out_rpm       "the selected output";
pin in  bit   use_mpg       "MPG in command";
function _;
license "GPL";              // indicates GPL v2 or later
;;
FUNCTION(_){
    if(use_mpg)
        out_rpm = mpg_rpm;
    else
        out_rpm = req_rpm;
}