With tabs/spaces, no paras:

• item1
• item2
• item3

With tabs/spaces, paras:

• item1

• item2

• item3

With tabs/spaces, no paras:

1. item1
2. item2
3. item3

With tabs/spaces, paras:

1. item1

2. item2

3. item3

Nested, without paras:

• item1
  • item2
    • item3

Nested, with paras:

• item1

  • item2
    • item3 (level 3)

Ordered, without paras:

1. item1
2. item2
   • do
   • it
   • now
3. item3

Ordered, with paras:

1. item1

2. item2

   • do
   • it
   • now

3. item3

Mixed tabs and spaces:

• some text
  • nested