S "COM1:9600,S,7,1,RS,DS0,CD0" AS #b "*.PLT"{ "Input file: ",F1$ F1$ AS #( ()2 #,L$< (L$,())  F N (L$)P J N Z J J%d J  Hn (L$,J,J) ";" Vx Zg #,L$;u  #,(L$,J);"OE"; #,IER IER   #,(L$,NJ) L$  "Send another file";L$- L$ "Y" L$ "y"  4`: "HPGL error ";IER;" on line below"; IER  ": Instruction not recognized" IER  ": Wrong number of parameters" IER  ": Parameters out of range"" IER  ": Unknown character set"D, IER  ": Position overflow"6 IER  ": Vector received while pinch wheels raised"@J