-* `keys`: Passes a hash to create_resource to make new `apt::key` resources.
-* `ppas`: Passes a hash to create_resource to make new `apt::ppa` resources.
-* `settings`: Passes a hash to create_resource to make new `apt::setting` resources.
-* `sources`: Passes a hash to create_resource to make new `apt::source` resources.
+* `keys`: Passes a hash to `create\_resource` to make new `apt::key` resources.
+* `ppas`: Passes a hash to `create\_resource` to make new `apt::ppa` resources.
+* `settings`: Passes a hash to `create\_resource` to make new `apt::setting` resources.
+* `sources`: Passes a hash to `create\_resource` to make new `apt::source` resources.
+
+####apt::backports
+
+* `location`: The URL of the apt repository. OS-dependent defaults are specifed in `apt::params` for Ubuntu and Debian. Required parameter for other OSes.
+* `release`: The distribution of the apt repository. Defaults to "${lsbdistcodename}-backports" for Ubuntu and Debian. Required parameter for other OSes.
+* `repos`: The component of the apt repository. OS-dependent defaults are speicifed in `apt::params` for Ubuntu and Debian. Required parameter for other OSes.
+* `key`: The key for the backports repository. Can either be a string or a hash. See apt::setting for details on passing key as a hash. OS-dependent defaults are specified in `apt::params` for Ubuntu and Debian. Required parameter for other OSes.
+* `pin`: The pin priority for backports repository. Can either be a number, a string, or a hash that will be passed as parameters to `apt::pin`. Defaults to `200`.