Summary of Character Attributes and their Effects

    Underline Hilite Reverse Blink          Effect
    --------- ------ ------- -----      ---------------------
      off      off     off   off        normal character
      off      off     off   on         blinking character
      off      off     on    off        reverse video character
      off      off     on    on         alternate reverse/normal
      off      on      off   off        highlight character
      off      on      off   on         alternate highlight/normal
      off      on      on    off        highlight, reverse video
      off      on      on    on         alternate highlight-reverse/normal
      on       off     off   off        underlined character
      on       off     off   on         normal char with blinking underline
      on       off     on    off        underlined reverse-video
      on       off     on    on         alternate underline-reverse/normal
      on       on      off   off        highlight underlined character
      on       on      off   on         alternate highlight-underline/normal
      on       on      on    off        highlight underlined reversed
      on       on      on    on         alternate hilite-underlined-rev/normal