| RNG validity error: file ./test/relaxng/tutor8_2_5.xml line 1 element head | |
| Expecting an element title, got nothing | |
| RNG validity error: file ./test/relaxng/tutor8_2_5.xml line 1 element head | |
| Invalid sequence in interleave | |
| RNG validity error: file ./test/relaxng/tutor8_2_5.xml line 1 element head | |
| Element head failed to validate content |