 However, some characters are normally made nine bits wide by repeating their last column instead of inserting a blank column, especially those defining horizontally connected IBM box-drawing characters.This functionality is hard-wired to the character numbers C0hex to DFhex, where all horizontally connecting characters are found in code page 437 and its most common derivatives.The same column-repeating trick was already used on the older MDA hardware with its 9×14 pixel glyphs, but on VGA it can be turned off when loading a font in which those character numbers do not represent box drawing characters.