Based on the syntax you provided, it looks like you are defining a or a parametric subroutine for a Biesse CNC (likely BiesseWorks , bSolid , or Retrofit G-code flavor).
; Linear interpolation to end point (endpath) G01 X[line_ep.X] Y[line_ep.Y] F100 biesse cix macro start_point line_ep endpath
; End of path command M30 (Endpath / Program End) Based on the syntax you provided, it looks
; Move to start point G00 X[start_point.X] Y[start_point.Y] M31 (Spindle ON) Based on the syntax you provided
(PARAMETRIC PROGRAM) (TOOL: ROUTER / CIX) START PGM ; Macro definition for line from point to endpath ; Variable declaration SET VAR start_point = [X,Y] (e.g., X0 Y0) SET VAR line_ep = [X,Y] (e.g., X100 Y50)
END PGM
Here is the logical text/code block for that definition: