annotation

1. programming, compiler Extra information associated with a

particular point in a document or program. Annotations may be

added either by a compiler or by the programmer. They are

not usually essential to the correct function of the program

but give hints to improve performance.

2. hypertext A new commentary node linked to an existing

node. If readers, as well as authors, can annotate nodes,

then they can immediately provide feedback if the information

is misleading, out of date or plain wrong.

(1995-11-26)