Naming Indentations of List Item

[namse]

1. Opening Indentation

   A indentation which is in front of line, before list marker.

   - a      // OI = 0
     - a   // OI = 2
       -  a  // OI = 4
   

2. Content Indentation

   A Indentation from start of line to first non-whitespace character after list marker.

   - a      // CI = 2
     - a   // CI = 4
       -  a  // CI = 6
   

   CI = OI + (length of list marker) + (length of following whitespaces >= 4 ? 0 : value)