Uri's "base" proposal is essentially identical to the "context" proposal I made a few months ago when we were debating the subpage issue. Larry was not very opposed to the idea because it isn't as tempting to use it to categorize top-level things, which is the evil we were trying to avoid with subpages. But at the time it was felt to be unnecessary. We can certainly revisit that decision if some pages make it clearly needed.

Subpages or not, it would be useful to be able have the slash (/) as part of the article name, e.g. "TCP/IP", "IBM System/360", and "OS/2", where the slash is part of the proper noun.

That's the way it is now. "/" is just another character. 0