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`TRADING TECH EXHIBIT 2316
`TRADESTATION v. TRADING TECH
` CBM2015-00179
`
`
`
`From:
`Sent:
`To:
`
`Subject:
`
`Tom Biddulph <bid@skyweyr.com>
`Tuesday, October 20, 1998 5:49AM
`peterhart@measuright.com; Rich at Home <rich@friesen.org>; Rich at Trademan
`<rich@trademan.com>; Jeffrey Schneider <JeffreyS@dnai.com>
`Re: Alternative Trading Board Design
`
`Let me think about your UI idea and what it would take to implement it.
`
`My first non-technical reaction to the UI is that I'd rather see the stacks grow horizontally instead of vertically,
`so that I could attach a quantity to the horizontal scale. It would take me a while to get used to the vertical scale
`being used for both price and quantity, but I can see some compelling visual logic in what you've done.
`
`More later.. ....
`
`-bid-
`
`-----Original Message-----
`From: Peter C. Hart <peterhart@measuright.com>
`To: Tom Biddulph <bid@skyweyr.com>; Rich at Home <rich@friesen.org>; Rich at Trademan
`<rich@trademan.com>; Jeffrey Schneider <JeffreyS@dnai.com>
`Date: Monday, October 19, 1998 8:36PM
`Subject: Alternative Trading Board Design
`
`I attach an alternative trading board design that grew out of a desire to visualize the quantity and
`priority of orders and the spread. Rich took a look at version one, liked the main idea and made a
`number of suggestions to support mouse manipulation, which I've incorporated into version 2. Further
`suggestions or comments are welcome.
`
`We need to hear from Tom what aspects would be particularly expensive or cumbersome to develop so
`we can look for better ways. Once we have a workable design, we can do some paper testing to see if
`the ideas are attractive to traders.
`
`Our use of a visually engaging and meaningful interface is a key element of our brand, the PitKit and
`our business plan. The particular way we combine layers of information on one trading board to publish
`the order book and support the many to many direct trading process is also potentially patentable. A
`patent or a defensible IP in this area would be a valuable asset and distinquish ePIT in the marketplace.
`So, it's useful for us to push our own envelop and test alternative designs. We may also want to go
`forward with a selection of interface elements that a PitKit operator can configure to suit a particular
`pit.
`
`Peter C. Hart
`53 Oakdale Avenue
`San Rafael, CA 94901-1353
`
`Tel. (415) 459-6386
`Fax. ( 415) 459-0884
`
`CONFIDENTIAL
`
`RF0008729
`
`Page 2 of 2
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