This files tests the lang attribute support of the glyph element. The test should produce an upward-triangle for the first (en) test element and a square for the second (fr) and third
(fr-ca) text element. In the third case, a glyph for fr is also suitable for a more specific language text fr-ca. In the fourth case, no suitable language specific or general glyph is
provided by the test so a fallback font for the letter 'a' should be used. A triangle or square must not be displayed in the fourth case.
