Add cross-references to the glossary entry for file objects.
diff --git a/Doc/library/gettext.rst b/Doc/library/gettext.rst
index eba59c8..9e1528b 100644
--- a/Doc/library/gettext.rst
+++ b/Doc/library/gettext.rst
@@ -173,8 +173,8 @@
associated :file:`.mo` file paths. Instances with identical :file:`.mo` file
names are cached. The actual class instantiated is either *class_* if
provided, otherwise :class:`GNUTranslations`. The class's constructor must
- take a single file object argument. If provided, *codeset* will change the
- charset used to encode translated strings in the :meth:`lgettext` and
+ take a single :term:`file object` argument. If provided, *codeset* will change
+ the charset used to encode translated strings in the :meth:`lgettext` and
:meth:`lngettext` methods.
If multiple files are found, later files are used as fallbacks for earlier ones.
@@ -219,7 +219,7 @@
.. class:: NullTranslations(fp=None)
- Takes an optional file object *fp*, which is ignored by the base class.
+ Takes an optional :term:`file object` *fp*, which is ignored by the base class.
Initializes "protected" instance variables *_info* and *_charset* which are set
by derived classes, as well as *_fallback*, which is set through
:meth:`add_fallback`. It then calls ``self._parse(fp)`` if *fp* is not