NAN (not a number):The result of an operation performed by an 8087, 80287, or 80387 processor that cannot be represented in IEEE format. For example, if you try to add two positive numbers whose sum is larger than the maximum value permitted by the processor, the coprocessor returns a NAN instead of the sum.
near address:A memory location specified by only the offset from the start of the segment. A near address requires only two bytes. See also “address” and “far address.”
newline character:In C, the character used to mark the end of a line in a text file, or the escape sequence (\n) used to represent this character.
null character:The ASCII character encoded as the value 0, represented as an escape sequence (\0) in a source file.
null pointer:A pointer to nothing, expressed as the integer value 0.