An overlay button displayed a the end of any article to be able to quickly come back to it's top. See the bug report at https://sourceforge.net/p/kiwix/feature-requests/685/. Kiwix is a Wikipedia offline reader. This task is related to the new release of its Android mobile app. Instructions to compile the app can be found here (Android section). This requires knowledge of the Java programming language.

Students are required to read Wikimedia's general instructions first.