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+Supported environmental variables
+=================================
+ PCILIB_PLUGIN_DIR - override path to directory with plugins
+
+ PCILIB_DEBUG_DMA - Enable DMA debugging
+ PCILIB_DEBUG_MISSING_EVENTS - Enable debugging of missing events (frames for instance)
+ IPECAMERA_DEBUG_BROKEN_FRAMES - Store broken frames in the specified directory (variable may specify directory)
+ IPECAMERA_DEBUG_RAW_PACKETS - Store all raw packets read from DMA grouped in frames (variable may specify directory)
+ IPECAMERA_DEBUG_RAW_FRAMES - Store all raw frames (variable may specify directory)