anchor.diff:  When game time advances to the issue_date click, 
   a market sell order is added to the note_ask table 
   and is automatically matched against any open 
  -limit buy orders in the note_bid relation: the 
  +limit buy orders in the note_bid relation for that 
  +specific note serial number: the 
   highest bid amount trade executes and the others 
   are expired on the subsequent click. If there
   are no open bid orders for a specific note at
  
positive.code: (2 rows)
  --------------------------------------------
  
  Next we can see the record of relvent cash transtions in the
  cash_journal:
  
  --------------------------------------------
  
negative.code: -------+--------------+---------+-------+------------+------------------------------
       2 | alice        | land    |       |          0 | Bought land 356a192b7913b0
       7 | bob          | bond    |  1000 |            | Issued bond 1b6453892473a4
       7 | bob          | land    |       |   0.001028 | Bought land 77de68daecd823
       7 | bob          | cost    |       |          1 | Trade order transaction fee
       9 | bob          | bond    |       | 998.998972 | Redeemed bond 1b6453892473a4
  (5 rows)
  
  