diff --git a/po/telegram-purple.pot b/po/telegram-purple.pot
index e4e8eae..baad563 100644
--- a/po/telegram-purple.pot
+++ b/po/telegram-purple.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2017-04-12 00:53+0200\n"
+"POT-Creation-Date: 2017-04-12 01:22+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -144,63 +144,69 @@ msgid ""
 "(Helps when not using Pidgin and you aren't being prompted for the code)"
 msgstr ""
 
-#: ../telegram-purple.c:823
+#. Whether to do fallback SMS verification
+#: ../telegram-purple.c:824
 msgid "Always"
 msgstr ""
 
-#: ../telegram-purple.c:824
+#. Whether to do fallback SMS verification
+#: ../telegram-purple.c:826
 msgid "Never"
 msgstr ""
 
-#: ../telegram-purple.c:825 ../telegram-purple.c:843
+#. Whether to do fallback SMS verification
+#. How to handle "large" files
+#: ../telegram-purple.c:828 ../telegram-purple.c:849
 msgid "Ask"
 msgstr ""
 
-#: ../telegram-purple.c:827
+#: ../telegram-purple.c:830
 msgid "Accept secret chats"
 msgstr ""
 
-#: ../telegram-purple.c:831
+#: ../telegram-purple.c:834
 msgid "Display buddies offline after (days)"
 msgstr ""
 
-#: ../telegram-purple.c:835
+#: ../telegram-purple.c:838
 msgid ""
 "Don't fetch history older than (days)\n"
 "(0 for unlimited)"
 msgstr ""
 
-#: ../telegram-purple.c:841
+#. How to handle "large" files
+#: ../telegram-purple.c:845
 msgid "Discard"
 msgstr ""
 
-#: ../telegram-purple.c:842
+#. How to handle "large" files
+#: ../telegram-purple.c:847
 msgid "Auto load"
 msgstr ""
 
-#: ../telegram-purple.c:845
+#: ../telegram-purple.c:851
 msgid "Auto load file transfers up to (kb)"
 msgstr ""
 
-#: ../telegram-purple.c:849
+#: ../telegram-purple.c:855
 msgid "Bigger file transfers"
 msgstr ""
 
 #. Chats
-#: ../telegram-purple.c:853
+#: ../telegram-purple.c:859
 msgid "Add all group chats to buddy list"
 msgstr ""
 
 #. Receipts
-#: ../telegram-purple.c:858
+#: ../telegram-purple.c:864
 msgid "Display notices of receipt"
 msgstr ""
 
-#: ../telegram-purple.c:862
+#: ../telegram-purple.c:868
 msgid "Send notices of receipt when present"
 msgstr ""
 
-#: ../telegram-purple.c:887
+#: ../telegram-purple.c:893
 msgid "Telegram Protocol Plugin."
 msgstr ""
 
@@ -294,34 +300,38 @@ msgstr ""
 msgid "failed loading message"
 msgstr ""
 
-#: ../tgp-msg.c:521 ../tgp-msg.c:567
+#. Content of a file transfer
+#: ../tgp-msg.c:522 ../tgp-msg.c:572
 msgid "document"
 msgstr ""
 
-#: ../tgp-msg.c:523
+#. Content of a file transfer
+#: ../tgp-msg.c:525
 msgid "audio"
 msgstr ""
 
-#: ../tgp-msg.c:525
+#. Content of a file transfer
+#: ../tgp-msg.c:528
 msgid "animation"
 msgstr ""
 
-#: ../tgp-msg.c:527
+#. Content of a file transfer
+#: ../tgp-msg.c:531
 msgid "video"
 msgstr ""
 
-#: ../tgp-msg.c:644
+#: ../tgp-msg.c:649
 #, c-format
 msgid "<b>Forwarded message from: %s</b><br>%s"
 msgstr ""
 
 #. FIXME: sometimes users aren't part of the response when receiving a forwarded message
-#: ../tgp-msg.c:647
+#: ../tgp-msg.c:652
 #, c-format
 msgid "<b>Forwarded message:</b><br>%s"
 msgstr ""
 
-#: ../tgp-msg.c:760
+#: ../tgp-msg.c:765
 msgid "loading document or picture failed"
 msgstr ""
 
diff --git a/telegram-purple.c b/telegram-purple.c
index b739d5d..fc1db9c 100644
--- a/telegram-purple.c
+++ b/telegram-purple.c
@@ -820,8 +820,11 @@ static void tgprpl_init (PurplePlugin *plugin) {
 
   // Messaging
   GList *choices = NULL;
+  // Whether to do fallback SMS verification
   ADD_VALUE(choices, _("Always"), "always");
+  // Whether to do fallback SMS verification
   ADD_VALUE(choices, _("Never"), "never");
+  // Whether to do fallback SMS verification
   ADD_VALUE(choices, _("Ask"), "ask");
 
   opt = purple_account_option_list_new (_("Accept secret chats"),
@@ -838,8 +841,11 @@ static void tgprpl_init (PurplePlugin *plugin) {
 
   // Media and documents
   choices = NULL;
+  // How to handle "large" files
   ADD_VALUE(choices, _("Discard"), "discard");
+  // How to handle "large" files
   ADD_VALUE(choices, _("Auto load"), "autoload");
+  // How to handle "large" files
   ADD_VALUE(choices, _("Ask"), "ask");
 
   opt = purple_account_option_int_new (_("Auto load file transfers up to (kb)"), TGP_KEY_MEDIA_SIZE,
diff --git a/tgp-msg.c b/tgp-msg.c
index a46b774..9418a52 100644
--- a/tgp-msg.c
+++ b/tgp-msg.c
@@ -518,12 +518,16 @@ static void tgp_msg_display (struct tgl_state *TLS, struct tgp_msg_loading *C) {
           if (C->data) {
             const char* path = C->data;
 
+            // Content of a file transfer
             const char *caption = _("document");
             if (M->media.document->flags & TGLDF_AUDIO) {
+              // Content of a file transfer
               caption = _("audio");
             } else if (M->media.document->flags & TGLDF_ANIMATED) {
+              // Content of a file transfer
               caption = _("animation");
             } else if (M->media.document->flags & TGLDF_VIDEO) {
+              // Content of a file transfer
               caption = _("video");
             }
 
@@ -564,6 +568,7 @@ static void tgp_msg_display (struct tgl_state *TLS, struct tgp_msg_loading *C) {
         } else {
           if (! tgp_our_msg (TLS, M)) {
             if (C->data) {
+              // Content of a file transfer
               text = format_document (C->data, M->media.encr_document->caption, _("document"),
                                            M->media.encr_document->mime_type, M->media.encr_document->size);