When "on" the commands listed below move the cursor to the first non-blank of the line. When off the cursor is kept in the same column (if possible). This applies to the commands:

• CTRL-D, CTRL-U, CTRL-B, CTRL-F, "G", "H", "M", "L", "gg"
• "d", "<<" and ">>" with a linewise operator
• "%" with a count
• buffer changing commands (CTRL-^, :bnext, :bNext, etc.)
• Ex commands that only has a line number, e.g., ":25" or ":+". In case of buffer changing commands the cursor is placed at the column where it was the last time the buffer was edited. NOTE: This option is set when 'compatible' is set.

(default on)