markdown lists following 4-space rule

gistfile1.txt

Notice how all list content (regardless of list marker)
always starts at column 4, 8, 12,...

  * item 1 containing
    multiple lines, all of
    which nicely align
    vertically.
  
  * item 2
  
    2nd paragraph in item 2
    
        code block in
        item 2. Note that it
        starts 8-spaces in
        
    3rd paragraph in item 2

  * item 3.

Numbered list, this time tighter. The consistency of
the 4-space rule makes nesting easy.

 1. won
 2. too
      * this,
      * that,
         1. firstly (note, starts 12 spaces in)
         2. secondly, with another
            line right here.
         3. thirdly
      * and the other
 3. tree

Code blocks are indented similarly to lists,

    code block
    is here

but have no list marker.

Some markdown implementations also support definition lists:

term 1
  : again, content starts at 4 spaces in,
    containing multiple lines.

term 2
  : some definition

term 3
  : some definition