... in the page title, and in the body: äöüßÄÖÜ
Other accents too:áéíóú
RS adds all of the iso8859-1 characters above 160, for even heavier testing:
160: ¡¢£¤¥¦§¨©ª«¬��®¯ 176: °±²³´µ¶·¸¹º»¼½¾¿ 192: ÀÁ����ÄÅÆÇÈÉÊËÌÍÎÏ 208: ÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞß 224: àáâãäåæçèéêëìíîï 240: ðñòóôõö÷øùúûüýþÿ
KBK edits the page to see whether the characters get damaged in the round trip.
mjk I can promise, that in this Wiki will visit some browsers, that will convert ISO-8859-1 characters to UTF-8. You can find my little rant from my user information page. Unfortunately, I'm yet unable to identify, which browsers change character encoding.
Let's test links: testing umlauts: äöüßÄÖÜ