device name                                  #DEV "Excellon 2"

baudrate (0=parallel)                        #BAU 9600
handshake (0=none, 1=XON/XOFF, 2=RTS/CTS)    #HSK 1

special characters in command strings:
linefeed                  \n
escape                    \e
carriage Return           \r
quotationmarks            \"
parameters will be inserted at %f (%d, %x, %ld, %e)

XY-maximum in mm                             #MAX 1000 1000
resolution (inch) in points/inch             #RES 10000
resolution (mm) in points/inch               #RMM 25400

mm                                           #UMM "M71"

for output only:
initialize                                   #INI ""
X-coordinate                                 #XPO "X%f"
Y-coordinate                                 #YPO "Y%f"
select tool                                  #TNR "T%d"
diameter of tool                             #TDM "C%f"
revolution                                   #TRV "S%f"
separator                                    #SEP " "
terminator                                   #TRM "\n"
line number                                  #NUM "N%d "
begin                                        #BEG "M25"
drill                                        #DRL "G05"
end                                          #END "M01"
end of program                               #PEN "M30"
reset                                        #RST ""

for interpreter only:
comment                                      #REM "/"
select tool                                  #ITL "T"
X                                            #IXP "X"
Y                                            #IYP "Y"
diameter of tool                             #IDM "C"
revolution                                   #IRV "S"
terminator                                   #ITM "\n"

tool parameter
