;My bed.g is
G28 ; home all
G91 ; relative mode
G1 Z5 F200 S2 ; move Z 2mm for clearance
G90 ;absolute mode
M401 ; In lieu of macro - call GCode for deploy probe
G29 ; run auto bed mesh level
M374  ; save map to file
M402 ; In lieu of macro - call GCode to retract probe
G1 X52 Y5 F5000