X-Git-Url: https://review.fuel-infra.org/gitweb?a=blobdiff_plain;f=README.md;h=99e808b8cc3b4e095dd79959996ef459e87bb71a;hb=c327d3d7bf906a64047a25266477b5cee71cd48f;hp=8230f1437db24c9b07c27f702e437ff3efcf0854;hpb=d946753dc4c2ac376e3d1edae92d6884516ebe3a;p=puppet-modules%2Fpuppetlabs-apt.git

diff --git a/README.md b/README.md
index 8230f14..99e808b 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,7 @@ Setup
 **What APT affects:**
 
 * package/service/configuration files for APT
+    * NOTE: Setting the `purge_preferences` or `purge_preferences_d` parameters to 'true' will destroy any existing configuration that was not declared with puppet. The default for these parameters is 'false'.
 * your system's `sources.list` file and `sources.list.d` directory
     * NOTE: Setting the `purge_sources_list` and `purge_sources_list_d` parameters to 'true' will destroy any existing content that was not declared with Puppet. The default for these parameters is 'false'.
 * system repositories
@@ -58,7 +59,7 @@ The parameters for `apt` are not required in general and are predominantly for d
 
 Puppet will manage your system's `sources.list` file and `sources.list.d` directory but will do its best to respect existing content.
 
-If you declare your apt class with `purge_sources_list` and `purge_sources_list_d` set to 'true', Puppet will unapologetically purge any existing content it finds that wasn't declared with Puppet.
+If you declare your apt class with `purge_sources_list`, `purge_sources_list_d`, `purge_preferences` and `purge_preferences_d` set to 'true', Puppet will unapologetically purge any existing content it finds that wasn't declared with Puppet.
 
 ### apt::builddep