Y may be a scalar or a simple vector of integer numbers in the range 0-255.

X is a simple numeric integer that specifies the output device.

• (Non-Windows platforms only) If X is positive or zero, it represents a file descriptor that must have been associated by the command that started Dyalog APL.
• If X is negative, it represents the tie number of a file opened by ⎕NTIE or ⎕NCREATE.

If Y is an empty vector, no codes are sent to the output device.

The shy result R is ⍬.

The operation will fail with a DOMAIN ERROR if Y contains anything other than numbers in the range 0-255 or tie numbers associated with currently open native files, or if the current process does not have permission to write to the specified device.

Examples

Write ASCII digits '123' to stream 9:

      9 ⎕ARBOUT 49 50 51

Write ASCII characters 'ABC' to MYFILE:

     'MYFILE' ⎕NCREATE ¯1
      ¯1 ⎕ARBOUT 65 66 67

Append the string 'Κάλο Πάσχα' to the same file, and close it:

      ¯1 ⎕ARBOUT 'UTF-8' ⎕UCS'Κάλο Πάσχα' 
      ⎕NUNTIE ¯1