Group attributes tests

Mozilla Bug 468418 Bug 844023 Bug 864224 Mozilla Bug 907682

- Oranges
- Apples
- Bananas

1. Oranges
2. Apples
3. Bananas
   - Oranges
   - Apples
   - Bananas

Oranges Apples Bananas Oranges Apples Bananas Oranges Apples Bananas
Item 1
Item 1A
Item 1B
Item 2
Item 2A
Item 2B

- File
- Help

- Crust
- Veges
- Carnivore

- Thai
- Subway
- Jimmy Johns

vegetables
cucumber
carrot
cars
mercedes
BMW
Audi
people

- Item 1
  - Item 1A
  - Item 1B
- Item 2
  - Item 2A
  - Item 2B
Item 1
- Item 1A
- Item 1B
Item 2
Item 2A
Item 2B
Item 1
Item 2

cell1 | cell2
cell3 | cell4

cell1
cell2
cell1
cell2
cell1
cell2

# heading1

## heading2

### heading3

#### heading4

##### heading5

###### heading6

ariaHeadingNoLevel

Password
- Xyzzy
- Plughs
- Shazaam
- JoeSentMe

cell
cell content
cell content
Apples
Oranges
Bananas

Comment 1

Comment 2

Comment 1 level 1

Comment 1 level 2

Comment 2 level 2

Comment 2 level 1

Comment 3 level 2

Comment 1 level 3

Comment 3 level 1