DDK Glossary - N

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named pipe
A named buffer that provides client-to-server, server-to-client or duplex communication between unrelated processes. Contrast with unnamed pipe.
notification callout
The feature that provides for a routine to be called on completion of an input/output request. See also notification routine.
notification routine
The routine indicated in an input/output request block to be called on completion of that request. See also notification callout.
null-terminated string
A string of (n+1) characters where the (n+1)th character is the "null" character (X'00') and is used to represent a n-character string with implicit length. Also called a "zero-terminated" string or an "ASCIIZ" string.