Comment 8 for bug 1098563

I'm referring to the fact that you have to resort to copy and paste if you want to modify / extend a board on the pcb level on a machine that doesn't have the necessary libs installed!

The schematic editor can, by use of the cache file add new symbols the usual way, the PCB editor cannot out of the box.

Ultimately I, and probably many others, desire a board that contains everything. Symbols, footprints... copy one file & have everything to work with the board.