Details of the CME price matching algorithm?

Quote from jim c:

" Also, if you have a limit order in and you change it, it receives a new time stamp and loses its prior. Meaning, you go to the back of the line. " ddunbar...the order only goes to back of the line if you ADD contracts to it or change the price. However if you are working to buy 50 and you shave 2 so that you are now working to buy 48 only, your order will not lose its place in line. You probably know this but the way it is worded might make the op think ALL modifications move your order to the back of the line. hope this helps. jim
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That's an important point I left out. Thanks for pointing that out. Decreasing an order size while not changing the price will not effect your place in the cue.
 
If I have a 1000 order and define a max show 100, then what is the priority of the remaining 900 orders?

Given the following orders:
Trader A E-mini S&P Bids 9330 for 3 lots @14:47
Trader B E-mini S&P Bids 9330 for 1000 lots @15:05 with max show = 100.
Trader C E-mini S&P Bids 9330 for 2 lots @15:06

Then, after the first 100 order for trader B is executed, will the next 100 order be placed after trader C? According to the GLOBEX brochure--- "the next 100 lot is entered into
the market as a new order"--- I think so.
 
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