Annotations Overview

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What is an Annotation?

To produce obsolete level two annotations, start GDB with the
`--annotate=2' option.
   Annotations start with a newline character, two `control-z'
characters, and the name of the annotation.  If there is no additional
information associated with this annotation, the name of the annotation
is followed immediately by a newline.  If there is additional
information, the name of the annotation is followed by a space, the
additional information, and a newline.  The additional information
cannot contain newline characters.
   Any output not beginning with a newline and two `control-z'
characters denotes literal output from GDB.  Currently there is no need
for GDB to output a newline followed by two `control-z' characters, but
if there was such a need, the annotations could be extended with an
`escape' annotation which means those three characters as output.
   A simple example of starting up GDB with annotations is:
     $ gdb --annotate=2
     GNU GDB 5.0
     Copyright 2000 Free Software Foundation, Inc.
     GDB is free software, covered by the GNU General Public License,
     and you are welcome to change it and/or distribute copies of it
     under certain conditions.
     Type "show copying" to see the conditions.
     There is absolutely no warranty for GDB.  Type "show warranty"
     for details.
     This GDB was configured as "sparc-sun-sunos4.1.3"
   Here `quit' is input to GDB; the rest is output from GDB.  The three
lines beginning `^Z^Z' (where `^Z' denotes a `control-z' character) are
annotations; the rest is output from GDB.