XMI12 — "Inputs" that define an XMI metadata interchange format.

In XMI 1.0, an XMI metadata interchange format (i.e. the XMI DTD and
associated
encoding rules) was determined solely by the metadata's MOF meta-model.

In XMI 1.1, various additions were made that meant that this is no
longer
the case. An XMI 1.1 format now also depends significantly on other
"input parameters". This includes:

1) The XML namespace used to abbreviate element names

2) The so called "domain datatype meta-model" and its relations to
the main meta-model.

3) Any custom rules for converting between data values and XML
strings.

4) Whether the format supports complete meta-models or incomplete
meta-models.

Since differences in any one of these parameters (or the MOF meta-model)
result in non-interoperable XMI formats, it is crucial that
meta-modellers
define the parameter values, explicitly and clearly. Without this,
implementation of "standard" XMI formats is a matter of guesswork.

The XMI spec should say precisely what parameters effect the XMI
mappings,
and how they should be specified for a "standard" XMI format.

The examples in the XMI spec, and particularly the Appendices should
state
what parameters have been used.