@NonNull
    public static String getAlternativeListingText(@NonNull final String alternativeCode) {
        return CgeoApplication.getInstance().getResources()
                .getString(R.string.cache_listed_on, GCConnector.getInstance().getName()) +
                ": <a href=\"https://coord.info/" +
                alternativeCode +
                "\">" +
                alternativeCode +
                "</a><br /><br />";
    }
Show the hint as toast message. If no hint is available, a default "no hint available" will be shown instead.
main/src/main/java/cgeo/geocaching/models/Geocache.java