In the board editor it acts as one big footprint. Thus you can’t accidentally move one of the headers out of alignment…
The holes are only marked on the silk screen. Thus they don’t affect the pcboard in any way, but you know where they are in case you need them. What are those holes for on the panda anyway?
I will make a second footprint for all the panda headers. Including them in the footprint, and not using them, wastes a lot of space on the shield.
Errol, rather than putting the mounting holes in the silk layer (which would be really annoying if you’re putting components or your own silk there - might i suggest you put them on either tDocu or bDocu? This is what those layers are for.