| HTML Diagnostic | IE | UK |
|---|---|---|
| Undefined attribute | 86.67 | 92.29 |
| Element not allowed by document type | 73.33 | 72.36 |
| End tag for not opened element | 62.22 | 66.31 |
| Required attribute not specified | 60.00 | 75.92 |
| Missing required end tag | 51.11 | 48.87 |
| Non SGML character number | 46.67 | 34.76 |
| Attribute value must be literal | 44.44 | 38.20 |
| General entity not defined and no default entity | 42.22 | 47.33 |
| Attribute value not allowed | 33.33 | 37.72 |
| End tag for element not finished | 28.89 | 34.64 |
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