This is required if you wish to generate errors again (and you may wish to do so if you need to know what went wrong). The following example will display **There was an error!** and terminate with the **9 STOP** statement error when line **20** is executed: ``` 10 ON ERROR PRINT "There was an error!":ON ERROR:STOP 20 PRINT 5/0 ``` ### ERROR [*n*] To generate the last error that actually occurred (this does not need error-trapping to be turned off), just type the command: ``` ERROR ``` followed by **ENTER**. Assuming the program above, the following amendment will print the message but still give the correct **Number too big** report: ``` 10 ON ERROR PRINT "There was an error!":ERROR 20 PRINT 5/0 ``` Used with the optional *parameter* *n*, where *n* is a value between **0** and **3**, **ERROR** can return the error code (for *n*=**0**), the line (for *n*=**1**), the statement (for *n*=**2**) and the memory bank where it occured (for n=**3**) – See *Chapter 23* for details about memory banks. For example: ``` PRINT ERROR (1) ``` given after the example above would return **20**. Moreover there's also: **ERROR$** which prints the error report rather than just the code. You could modify the example above to be: ``` 10 ON ERROR PRINT "There was error! "; ERROR$:ON ERROR:STOP 20 PRINT 5/0 ``` which will print the actual error report **Number too big**. You could then substitute **STOP** with a **GO TO** to the line of error handling code without having to halt execution of your program. An additional way with which you can obtain details of the last error and store them away maybe for purposes of statistical analysis is using the following command: **ERROR TO** *codevar* [, *linevar*, [*statementvar*, [*bankvar*]]] This will store the error code in the numeric variable *codevar*, the line number in *linevar*, the statement number in *statementvar* and the bank number in *bankvar* (do not worry about what *bank* means for the moment). Note that you do not need to supply later variable names if you do not need the information, so all of these are valid: ``` ERROR TO e ERROR TO e,l ERROR TO e,l,s ERROR TO e,l,s,b ```