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"A key selling point for the Surface Pro is its inclusion of 'pen' technology, in that is ships with a pen, and can accept that form of input, granting users another method by which ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/microsoft/2013/02/18/microsoft-investigating-issue-with-pen-detection-affecting-subset-of-surface-pro-owners/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+TheNextWeb+(The+Next+Web+All+Stories)>