EDIT Block Elements One of Unicode’s goals is to provide round trip encoding to and from all existing character set standards. To do this, it must encode some pretty silly stuff.

IBM PC Code Page 437 (from 1981), among others, contains a number of characters intended to enable a simple kind of display cell graphics. Before the advent of vector graphics the user was able to create simple bitmaps by filling a fraction of a cell, or shading a cell to some degree. Note that these characters do not form a logically complete set, but are instead just enough for compatibility.

Source: http://www.everything2.com/index.pl
 
U+2580U+2581U+2582U+2583U+2584U+2585U+2586U+2587U+2588U+2589U+258AU+258BU+258CU+258DU+258EU+258FU+2590U+2591U+2592U+2593U+2594U+2595U+2596U+2597U+2598U+2599U+259AU+259BU+259CU+259DU+259EU+259F
U+2580 UPPER HALF BLOCK
U+2581 LOWER ONE EIGHTH BLOCK
U+2582 LOWER ONE QUARTER BLOCK
U+2583 LOWER THREE EIGHTHS BLOCK
U+2584 LOWER HALF BLOCK
U+2585 LOWER FIVE EIGHTHS BLOCK
U+2586 LOWER THREE QUARTERS BLOCK
U+2587 LOWER SEVEN EIGHTHS BLOCK
U+2588 FULL BLOCK
U+2589 LEFT SEVEN EIGHTHS BLOCK
U+258A LEFT THREE QUARTERS BLOCK
U+258B LEFT FIVE EIGHTHS BLOCK
U+258C LEFT HALF BLOCK
U+258D LEFT THREE EIGHTHS BLOCK
U+258E LEFT ONE QUARTER BLOCK
U+258F LEFT ONE EIGHTH BLOCK
U+2590 RIGHT HALF BLOCK
U+2591 LIGHT SHADE
U+2592 MEDIUM SHADE
U+2593 DARK SHADE
U+2594 UPPER ONE EIGHTH BLOCK
U+2595 RIGHT ONE EIGHTH BLOCK
U+2596 QUADRANT LOWER LEFT
U+2597 QUADRANT LOWER RIGHT
U+2598 QUADRANT UPPER LEFT
U+2599 QUADRANT UPPER LEFT AND LOWER LEFT AND LOWER RIGHT
U+259A QUADRANT UPPER LEFT AND LOWER RIGHT
U+259B QUADRANT UPPER LEFT AND UPPER RIGHT AND LOWER LEFT
U+259C QUADRANT UPPER LEFT AND UPPER RIGHT AND LOWER RIGHT
U+259D QUADRANT UPPER RIGHT
U+259E QUADRANT UPPER RIGHT AND LOWER LEFT
U+259F QUADRANT UPPER RIGHT AND LOWER LEFT AND LOWER RIGHT
CHARACTER  < BLOCK > 
U+2580 – U+259F Block Elements
DEUTSCH : ENGLISH