___
          _.-'   \
         /        \
        /          \
       /            `.___
      ( .--.)\/(,.--.    `-.
      ,',-. \   / ,-.`.     )
     ( /   \     /   \ )   / \
      || .-|     |-. ||---'|  \
     _|| | |     | | ||_   |   \
    /. \ |_|.---.|_| / ,\  | .^.\
    `.\ `--"     "--' /,'  |/
      `>  _________  <'
    ,-' ,---.---.---. `-.
    `--'\    \j/    /`--'
       `.\         /,'
         \\_______//
          `-------'

Why do mathematicians insist on using words that already have another
meaning?  "It is the complex case that is easier to deal with."  "If it
doesn't happen at a corner, but at an edge, it nonetheless happens at a
corner."