Sayadaw U Pandita's comments may be useful: http://homepage.ntlworld.com/pesala/Pan ... structions
In this meditation it is very important to have both effort and precise aim, so that the mind meets the sensation directly and powerfully. One helpful aid to precision and accuracy is to make a soft mental note of the object of awareness, naming the sensation by saying the word gently and silently in the mind, like “rising, rising...falling, falling.”
In making the verbal label, there is no need for complex language. One simple word is best. For the eye, ear, and tongue doors we simply say, “Seeing, seeing... Hearing, hearing... Tasting, tasting.” For sensations in the body we may choose a slightly more descriptive term like warmth, pressure, hardness, or motion. Mental objects appear to present a bewildering diversity, but actually they fall into just a few clear categories such as thinking, imagining, remembering, planning, and visualizing. But remember that in using the labeling technique, your goal is not to gain verbal skills. Labeling technique helps us to perceive clearly the actual qualities of our experience, without getting immersed in the content. It develops mental power and focus. In meditation we seek a deep, clear, precise awareness of the mind and body. This direct awareness shows us the truth about our lives, the actual nature of mental and physical processes.
Note the part in red. Labelling is a technique, a "trick" as Buddhadasa Bhikkhu would call such things:http://dhammawheel.com/viewtopic.php?f= ... 77#p214405
It has no complicated philosophical or dhammic significance, it's simply a method to aid focus, much as other teachers use counting of breaths. Many of us find that it works really well. Others don't.
Patrick Kearney's comments in this talk: http://www.dharmasalon.net/Audio/Bodhi% ... _2011.html
may be helpful.