As we know, in windows phone 8, if we want to turn screen light off with app, we can call windows runtime component by p/invoke. example:
peripherally inserted central catheter (PICC) care, a nursing intervention from the Nursing Interventions Classification (NIC) defined as insertion and maintenance of a peripherally inserted central catheter either midline or centrally located. See also Nursing Interventions Classification.
A Peripherally Inserted Central Catheter (PICC), is a long, thin, soft plastic tube that functions as an intravenous (IV) line. A PICC line allows nurses and doctors to administer medications and fluids on a frequent basis. A PICC can remain in place for as long as you need IV therapy.