It was always planned to rework them but well nobody was prepared to sink the time necessary into them (i was tempted to just throw them out and let contributors start fresh but the fear of the backlash for such a move prevented me from doing so). Not only do they not have a footprint assigned, but they still have hidden power pins. They are basically legacy libs in a very bad state. The logic libs are a slightly different story. These again do not have a footprint assigned, but they have a footprint filter which will help to find footprints during the assignment process (either for cvpcb or with the experimental option in the 'add symbol dialog').

Symbols in this library sometimes don't even have any footprint filters setup (would not really be feasible for the transistor symbol for example). It holds the most generic symbols of all (like the generic resistor, capacitor but also a generic symbol for transistors - The latter for example also has a more specialized library with fully specified symbols). A few symbol libraries are allowed to have so called generic symbols in them. This combination is also vetted during the contribution process (The reviewer checks that the pad numbers of the footprint agree with what the symbol numbering expects and if the footprint itself is for the correct mechanical dimensions of the package - very tricky with parts in SOT-23 and similar where manufactures simply can not agree on a pad numbering scheme which is annoying to say the least) Of course as this is vetted by a human there is always the chance for an error to appear. We call this a 'fully specified symbol' (it is as specified as feasible for the official lib - we can not really provide order numbers of distributors nor can we provide you with your personal house part number for obvious reasons). The ruleset of the official library is quite clear about the fact that basically every symbol must have a footprint assigned.

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