Apple 310 사용자 설명서

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C H A P T E R   3
Communication Channels
56
Status Queries and Spontaneous Messages
All messages generated spontaneously by the server (as opposed to those messages 
produced when the PostScript language program executes print) conform to the same 
syntax as status messages. They are sent as ordinary data through the communication 
channel, in sequence with any other characters written to the standard output file. 
Consequently, they are always bracketed with %%[ and ]%% for either serial or parallel 
channels:
%%[Error:error; OffendingCommand: operator ]%%
An error has been detected by the PostScript interpreter and the standard 
error handle (handleerror) has been invoked. 
error
 is the name of the error operator originally invoked operator is the 
operator or other PostScript object being executed at the time of the error
Refer to the PostScript Language Reference Manual for further information on 
error handling.
%%[PrinterError:reason]%%
A problem has been reported by the printer mechanism. The type of problem 
is indicated by reason: no paper, no paper tray, paper jam, 
cover open, etc.
A printer error can only occur during execution of showpage or copypage, 
that is when the printer is actually trying to print a page. After generating 
this message, the server usually waits for the condition to be corrected and 
then continues printing automatically.
The server’s behavior when it encounters a printer error is controlled by the 
printererror
 procedure described in Chapter 3.
%%[Flushing: rest of job (to end-of-file) will be ignored ]%%
Because of a previous error or abort condition, for example stop or CTL-C 
interrupt, the remainder of the current job is being discarded. The server 
reads and discards characters from the standard input file until it receives an 
end-of-file indication.
%%[exit server: permanent state may be changed ]%%
The PostScript language program has successfully exited from the server’s 
normal save/restore context, and may now make permanent changes to 
the system parameters or to the virtual memory. See Chapter 3.