diff --git a/demos/app.html b/demos/app.html
index 0069bc0fe..ee183f004 100644
--- a/demos/app.html
+++ b/demos/app.html
@@ -46,6 +46,10 @@ and gives control on quality. It indicates confidence with colours:
                  Builds the translation word by word.
                 </li>
 </ul>
+The green translations currently come from a tourist phrasebook, which allows
+you to translate things like "hello" and "how far is the airport from
+the hotel". But this part can be easily adapted to other uses, such as
+technical language.
 </p>
 
 <p>
diff --git a/demos/translation.t2t b/demos/translation.t2t
index 2078a1fec..1a6db9ad6 100644
--- a/demos/translation.t2t
+++ b/demos/translation.t2t
@@ -29,6 +29,12 @@ Powered by multilingual grammars
                  Builds the translation word by word and returns unknown words verbatim.
 
 
+The green translations currently come from a tourist phrasebook, which allows
+you to translate things like "hello" and "how far is the airport from
+the hotel". But this part can be easily adapted to other uses, such as
+technical language.
+
+
 ==What you can expect==
 
 The program is designed to translate anything, just like Google translate and Bing. It has some advantages over them:
diff --git a/src/ui/android/assets/help_content.html b/src/ui/android/assets/help_content.html
index 98bb824f3..6e63ff581 100644
--- a/src/ui/android/assets/help_content.html
+++ b/src/ui/android/assets/help_content.html
@@ -23,6 +23,10 @@ and gives control on quality. It indicates confidence with colours:
                  Builds the translation word by word.
                 </li>
 </ul>
+The green translations come from a tourist phrasebook, which allows
+you to translate things like "hello" and "how far is the airport from
+the hotel". But this part can be easily adapted to other uses, such as
+technical language.
 </p>
 
 <p>