From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: From: "Russ Cox" To: 9fans@cse.psu.edu Subject: Re: [9fans] ZP in libdraw MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Date: Mon, 2 Sep 2002 22:08:22 -0400 Topicbox-Message-UUID: e371dd40-eaca-11e9-9e20-41e7f4b1d025 ZP == Pt(0,0). It's just convenient not to force the compiler to construct it, and it's shorter. It's not initialized anywhere, hence it is zero. I suppose it could be != Pt(0,0) if you assigned to it, but that would break most code that uses it. It's no good if the zero point isn't zero. Russ