In this four-staves part, the <part-symbol> element spans up a ‘square’ staff group delimiter between staves 2 and 3. Test 1 0 4 4 4 square G 2 G 2 F 4 F 4 4 1 1 4 4 2 2 4 4 3 3 4 4 4 4 4 1 1 4 4 2 2 4 4 3 3 4 4 4 4 light-heavy