externfloatfilament_size[EXTRUDERS];// cross-sectional area of filament (in millimeters), typically around 1.75 or 2.85, 0 disables the volumetric calculations for the extruder.
externfloatvolumetric_multiplier[EXTRUDERS];// reciprocal of cross-sectional area of filament (in square millimeters), stored this way to reduce computational burden in planner
staticint16_tflow_percentage[EXTRUDERS];// Extrusion factor for each extruder
staticfloatfilament_size[EXTRUDERS],// diameter of filament (in millimeters), typically around 1.75 or 2.85, 0 disables the volumetric calculations for the extruder
volumetric_multiplier[EXTRUDERS];// Reciprocal of cross-sectional area of filament (in mm^2). Pre-calculated to reduce computation in the planner
// May be auto-adjusted by a filament width sensor
staticfloatmax_feedrate_mm_s[XYZE_N],// Max speeds in mm per second