Blog Post 2 - Common Interface

Again, merging will publish.
Not sure what this "elements Illumunination, ..." is: do we need a couple more words to make it more obvious that this is actually a list of elements? At first reading I wondered if we are talking about the illumination of elements or what. Perhaps quoting or otherwise marking up the element names will suffice, or perhaps, "including the XML elements ..." (if that's what's meant) instead of just "including elements"?

Quoting/markup (even just monospace font) may be useful for these elements because then we have "Differential Interference Contrast" quickly following which, although being also capitalized in the middle of this sentence, are *not* XML element names (I think).