MDMI_ — Changing the "position" attribute

The attribute "position" was meant to describe the cardinal position of a repeated MessageElement class (i.e., the "multipleInstance" attribute has a value of "True"). Obtaining such a value may be difficult. It would be better if the attribute simply described a more general ordering description in which a cardinal position could be an option.

The attributes "position" and "positionLanguage" will be changed to "ordering" and "orderingLanguage" respectively. The description of the "ordering" attribute will be that it specifies the method of ordering for SemanticElements that have multiple instances.