I don't know what you would like from a link.

The screen capture below has true small caps on the top line, the bottom line is made from reducing the size of capital letters. What you should note is the "weight" of the characters. True small caps (whether as a different font in the same family, or as accessible in a single OpenType font as I am using for the screen shot) will have the stroke weight the same as the capitals. Next to the work-around, it is an obvious difference.

This is only one small reason why XDP needs to become OpenType-aware.

Mike
Click image for larger version. 

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