DDR Simple API - Use acronyms consistently through the text

This is an editorial comment:

+ Acronyms should be used consistently through the text

For example in Section 1.2 the acronym DC, Delivery Context is introduced. However the acronym DC should have been introduced earlier in the document, on section 1.1, once the term "Delivery Context" is first mentioned.

The same applies with other acronyms that might appear on other parts of the doc