2008 March 11th Tuesday (三月 十一日 火曜日）

  There are two kinds of messages using to communicate.  One is used by GUI written by Java, another is used by our CGI program.
I found that the former is 4 bytes longer than the later.  The 4 bytes are all 0xFF.

  Today I tested how to register, delete, and modify a record in memory on a SCS.  I created three messages.  The register message
and delete message can be accepted successfully.  But the modification message can not be accepted.  It means that we can not update
a record by sending a message.  We must adopt an indirectly way that is to delete the old record and register a new record with new
states.

  There is a phenomenon when deleting a record, the slot of the record of deleted is not set by initialized values -- 0.  Some fields
still hold their values.