The GDB Breakpoints buffer shows the breakpoints, watchpoints and catchpoints in the debugger session. See Breakpoints. It provides the following commands, which mostly apply to the current breakpoint (the breakpoint which point is on):
gdb-toggle-breakpoint). On a graphical display, this changes the color of the dot in the fringe of the source buffer at that line. The dot is red when the breakpoint is enabled, and gray when it is disabled.
gdb-many-windows is non-
nil, the GDB Breakpoints
buffer shares its window with the GDB Threads buffer. To switch from
one to the other click with Mouse-1 on the relevant button in
the header line. If
nil, the GDB Threads buffer is the one shown by default.