Talk:Causal spacetime structure

Plans for expansion
I'd like to see this article have main article links to timelike, spacelike and lightlike. Although the latter 3 terms are defined in other articles, the words themselves can refer to many things, for example, curves, hypersurfaces, spacetime intervals and so on. I might try and deal with this if I have the energy. MP (talk•contribs) 21:10, 6 November 2007 (UTC)