How do you call this figure

From	Cecil Westerhof <Cecil@decebal.nl>
Newsgroups	comp.lang.postscript
Subject	How do you call this figure
Organization	Decebal Computing
Date	2013-07-28 16:36 +0200
Message-ID	<87mwp621kn.fsf@Aspire.decebal.nl> (permalink)

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I have the following code to draw a figure:
    /radius 5 def
    /x 25 def
    /y 15 def

    x y moveto
    0 radius rlineto
    x radius sub  y radius add  radius  0  270  arc
    x y moveto
    radius neg 0 rlineto
    x radius sub  y radius sub  radius  90  360  arc
    x y moveto
    0 radius neg rlineto
    x radius add  y radius sub  radius  180  90  arc
    x y moveto
    radius 0 rlineto
    x radius add  y radius add  radius  270  180  arc
    stroke

How is this figure called? I want to make a postscript libary
containing this figure, but giving the correct name would be useful.

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof

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How do you call this figure Cecil Westerhof <Cecil@decebal.nl> - 2013-07-28 16:36 +0200
  Re: How do you call this figure Mark Carroll <mtbc@bcs.org> - 2013-07-28 15:48 +0100
    Re: How do you call this figure Raoul Fleckman <raoul.fleckman@gmail.com> - 2013-07-28 16:29 +0000
      Re: How do you call this figure Luuk <luuk@invalid.lan> - 2013-07-28 21:13 +0200
        Re: How do you call this figure Cecil Westerhof <Cecil@decebal.nl> - 2013-07-29 09:19 +0200
          Re: How do you call this figure Cecil Westerhof <Cecil@decebal.nl> - 2013-07-29 11:24 +0200
            Re: How do you call this figure Cecil Westerhof <Cecil@decebal.nl> - 2013-07-30 11:54 +0200
  Re: How do you call this figure luser- -droog <mijoryx@yahoo.com> - 2013-07-28 23:24 -0700
    Re: How do you call this figure Cecil Westerhof <Cecil@decebal.nl> - 2013-07-29 10:08 +0200

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