Returns the number of a line in which an error has been generated.
ER = ERL
The value of ERL
can only be changed within a program, and the value is cleared
when a program is executed or when the power of the unit is switched OFF.
10 ON ERROR GOTO 40
20 **ERROR**
30 END
40 PRINT "ERROR LINE="; ERL
50 RESUME 30
Error is generated in line 20 line mumber where the error was generated is displayed in line 40.