The 'head' section of every element in HTML 5.1 has information about tag omission rules and ARIA attributes that can be used on the element, this information is available for some but not all the elements in HTML5 CR. 

I propose adding this information to:
4.7.3 The embed element
4.7.4 The object element
4.7.5 The param element
4.7.6 The video element
4.7.7 The audio element
4.7.8 The source element
4.7.9 The track element
4.7.11 The map element
4.7.12 The area element
4.9.1 The table element
4.9.2 The caption element
4.9.3 The colgroup element
4.9.4 The col element
4.9.5 The tbody element
4.9.6 The thead element
4.9.7 The tfoot element
4.9.8 The tr element
4.9.9 The td element
4.9.10 The th element
4.10.3 The form element
4.10.4 The label element
4.10.5 The input element
4.10.6 The button element
4.10.7 The select element
4.10.8 The datalist element
4.10.9 The optgroup element
4.10.10 The option element
4.10.11 The textarea element
4.10.12 The keygen element
4.10.13 The output element
4.10.14 The progress element
4.10.15 The meter element
4.10.16 The fieldset element
4.10.17 The legend element
4.11.1 The script element
4.11.2 The noscript element
4.11.3 The template element
4.11.4 The canvas element