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version 1.2, 2000/01/02 07:32:11 version 1.3, 2000/01/03 04:27:52
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 % $OpenXM: OpenXM/doc/issac2000/data-format.tex,v 1.1 1999/12/23 10:25:08 takayama Exp $  % $OpenXM: OpenXM/doc/issac2000/data-format.tex,v 1.2 2000/01/02 07:32:11 takayama Exp $
   
 \section{Data Format}   (Ohara)  \section{Data Format}   (Ohara)
   
Line 13  However, if a program sends an OX data or an OX comman
Line 13  However, if a program sends an OX data or an OX comman
 an unrecoverable error may occur.  an unrecoverable error may occur.
 To avoid such a case OpenXM provides a scheme not  To avoid such a case OpenXM provides a scheme not
 to send an OX message unknown to peers.  to send an OX message unknown to peers.
 It is realized by exchanging the list of  It is realized by exchanging a list of
 supported CMO's, OpenXM stack machine codes, and necessary extra informations.  supported CMO's, OpenXM stackmachine codes, and necessary extra informations.
 The list is called mathcap.  The list is called {\it mathcap}.
 Mathcap is also defined as a CMO and the elements are 32bit integers  Mathcap is also defined as a CMO and the elements are 32bit integers
 or strings.  or strings.
   
Line 23  Math encoding types of OX data are distinguished with 
Line 23  Math encoding types of OX data are distinguished with 
 of OX messages.  of OX messages.
 For example,  For example,
 an OX message with the tag  an OX message with the tag
 OX\_DATA is followed by CMO packet.  OX\_DATA is followed by a CMO packet.
 An OX message with the tag  An OX message with the tag
 OX\_DATA\_OPENMATH\_XML is followed by  OX\_DATA\_OPENMATH\_XML is followed by
 OpenMath XML string and its length.  an OpenMath XML string and its length.
   
 All OpenXM compliant systems should implement 7 primitive data types  All OpenXM compliant systems should implement 7 primitive data types
 of CMO.  of the CMO.
 These are used not only to express mathematical objects, but also  These are used not only to express mathematical objects, but also
 indespensable to carry control informations such as mathcap.  indispensable to carry control informations such as mathcap.
 CMO is an original methematical data encoding system of the OpenXM project.  CMO is an original methematical data encoding system of the OpenXM project.
 Let us explain the data format of CMO.  Let us explain the data format of CMO.
 Any CMO packet consists of a header and a body.  Any CMO packet consists of a header and a body.
Line 70  Following tags are registered in the OpenXM for now.
Line 71  Following tags are registered in the OpenXM for now.
 #define CMO_LAMBDA                         62  #define CMO_LAMBDA                         62
 \end{verbatim}  \end{verbatim}
 The first seven types should be implemented on all OpenXM compliant systems.  The first seven types should be implemented on all OpenXM compliant systems.
 The format of the first severn CMO's are as follows. \\  The format of the first seven CMO's are as follows. \\
 \begin{tabular}{|c|c|}  \begin{tabular}{|c|c|}
 \hline  \hline
 {\tt int32 CMO\_ERROR2} & {\sl CMObject} {\rm ob} \\  {\tt int32 CMO\_ERROR2} & {\sl CMObject} {\rm ob} \\
Line 114  $\cdots$ & {\tt CMObject} {\rm ob[n-1]} \\ 
Line 115  $\cdots$ & {\tt CMObject} {\rm ob[n-1]} \\ 
 \end{tabular} \\  \end{tabular} \\
   
   
 A mathematical programmer who wants to implement CMO on a server proceed  A mathematical programmer who wants to implement CMO on a server proceeds
 as follows.  as follows.
 \begin{enumerate}  \begin{enumerate}
 \item Look for the CMO list at the web cite \cite{openxm-web}.  \item Look for the CMO list at the web cite \cite{openxm-web}.
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