target_pcb - PCB workflow target 
 Attribute translation 
 Network attribute translation 
The final display/omit network attribute is derived from the first
available of the following input:
	-  network attribute pcb/omit
	
-  network attribute omit
	
-  or else display/omit is not set
 Component attribute translation 
The final display/dnp component attribute is derived from the first
available of the following input:
	-  component attribute pcb/dnp
	
-  component attribute dnp
	
-  or else display/dnp is not set
The final display/omit component attribute is derived from the first
available of the following input:
	-  component attribute pcb/omit
	
-  component attribute omit
	
-  or else display/omit is not set
 Port attribute translation 
The final display/name port attribute is derived from the first
available of the following input:
	-  port attribute pcb/pinnum
	
-  port attribute pinnum
	
-  name of the port object (coming from the name of the concrete term objects)
 Attribute export names 
The plugin supports the standard attribute export naming mechanism
with the following defaults:
	-  workflow prefix is "pcb" (any pcb:key attribute is exported as key)
	
-  display/dnp is named "dnp" for the export
	
-  tolerance is named "tolerance" for export (useful for components)
	
-  device, footprint and value attributes are not explicitly handled as most export formats will have special casing for those