@end smallexample
-@subheading Registering a Unwinder
+@subheading Registering an Unwinder
-An object file, a program space, and the @value{GDBN} proper can have
-unwinders registered with it.
+Object files and program spaces can have unwinders registered with
+them. In addition, you can also register unwinders globally.
-The @code{gdb.unwinders} module provides the function to register a
+The @code{gdb.unwinders} module provides the function to register an
unwinder:
@defun gdb.unwinder.register_unwinder (locus, unwinder, replace=False)
-@var{locus} is specifies an object file or a program space to which
-@var{unwinder} is added. Passing @code{None} or @code{gdb} adds
-@var{unwinder} to the @value{GDBN}'s global unwinder list. The newly
-added @var{unwinder} will be called before any other unwinder from the
+@var{locus} specifies to which unwinder list to prepend the
+@var{unwinder}. It can be either an object file, a program space, or
+@code{None}, in which case the unwinder is registered globally. The
+newly added @var{unwinder} will be called before any other unwinder from the
same locus. Two unwinders in the same locus cannot have the same
-name. An attempt to add a unwinder with already existing name raises
+name. An attempt to add an unwinder with an already existing name raises
an exception unless @var{replace} is @code{True}, in which case the
old unwinder is deleted.
@end defun