Show (partial) command in the last line of the screen. Set this option off if your terminal is slow. In Visual mode the size of the selected area is shown:

• When selecting characters within a line, the number of characters. If the number of bytes is different it is also displayed: "2-6" means two characters and six bytes.
• When selecting more than one line, the number of lines.
• When selecting a block, the size in screen characters: {lines}x{columns}. This information can be displayed in an alternative location using the 'showcmdloc' option. NOTE: This option is set to the Vi default value when 'compatible' is set and to the Vim default value when 'compatible' is reset.

(Vim default: on, off for Unix, Vi default: off, set in defaults.vim)