:program:`xgettext`, :program:`pygettext`, and similar tools generate
:file:`.po` files that are message catalogs. They are structured
-:human-readable files that contain every marked string in the source
-:code, along with a placeholder for the translated versions of these
-:strings.
+human-readable files that contain every marked string in the source
+code, along with a placeholder for the translated versions of these
+strings.
Copies of these :file:`.po` files are then handed over to the
individual human translators who write translations for every