Document 'skip' parameter to constructor
diff --git a/Doc/library/bdb.rst b/Doc/library/bdb.rst
index a74e14d..4ee2f19 100644
--- a/Doc/library/bdb.rst
+++ b/Doc/library/bdb.rst
@@ -62,14 +62,22 @@
* The breakpoint hit count.
-.. class:: Bdb()
+.. class:: Bdb(skip=None)
- The :class:`Bdb` acts as a generic Python debugger base class.
+ The :class:`Bdb` class acts as a generic Python debugger base class.
This class takes care of the details of the trace facility; a derived class
should implement user interaction. The standard debugger class
(:class:`pdb.Pdb`) is an example.
+ The *skip* argument, if given, must be an iterable of glob-style
+ module name patterns. The debugger will not step into frames that
+ originate in a module that matches one of these patterns. Whether a
+ frame is considered to originate in a certain module is determined
+ by the ``__name__`` in the frame globals.
+
+ .. versionadded:: 2.7
+ The *skip* argument.
The following methods of :class:`Bdb` normally don't need to be overridden.