Methods and apparatus for positioning a downhole tool in a wellbore extending into a subterranean formation, commencing coring operations by rotating a coring bit of the downhole tool and extending the rotating coring bit into a sidewall of the wellbore, sensing a parameter associated with the coring operations, and adjusting the coring operations based on the sensed parameter. Each email client also serves as a node in the peer-to-peer system, relaying email messages andor attachments. Film forming unit blocks, namely, a TCT layer, a COT layer and a BCT layer, and developing unit blocks, namely, DEV layers, are stacked up in layers in a processing block S2. A first material may be formed along the tops and sidewalls of the features.