diff --git a/apps/app_playback.c b/apps/app_playback.c
index ae06b59a80..d02a146c5c 100644
--- a/apps/app_playback.c
+++ b/apps/app_playback.c
@@ -65,6 +65,8 @@ static char *descrip =
 "This application sets the following channel variable upon completion:\n"
 " PLAYBACKSTATUS    The status of the playback attempt as a text string, one of\n"
 "               SUCCESS | FAILED\n"
+"See Also: Background (application) -- for playing soundfiles that are interruptible\n"
+"          WaitExten (application) -- wait for digits from caller, optionally play music on hold\n"
 ;
 
 
diff --git a/main/pbx.c b/main/pbx.c
index 8d2aa108da..41027c35a1 100644
--- a/main/pbx.c
+++ b/main/pbx.c
@@ -288,6 +288,8 @@ static struct pbx_builtin {
 	"    n - Don't answer the channel before playing the files.\n"
 	"    m - Only break if a digit hit matches a one digit\n"
 	"          extension in the destination context.\n"
+	"See Also: Playback (application) -- Play sound file(s) to the channel,\n"
+    "                                    that cannot be interrupted\n"
 	},
 
 	{ "Busy", pbx_builtin_busy,
@@ -485,6 +487,7 @@ static struct pbx_builtin {
 	"  Options:\n"
 	"    m[(x)] - Provide music on hold to the caller while waiting for an extension.\n"
 	"               Optionally, specify the class for music on hold within parenthesis.\n"
+	"See Also: Playback(application), Background(application).\n"
 	},
 
 };