I'm preparing a geometry course using ConTeXt and am impressed with the system so far. One thing I need is to do is typeset various geometrical symbols. It looks like ConTeXt already has the \overleftarrow and \overrightarrow commands, but one thing I'd like to have is \overleftrightarrow, for typesetting the symbol customarily used to denote the line determined by two points. It seems, though, that this isn't available in ConTeXt, or, at least, it is not available by default. I tried looking on the contextgarden and google, but didn't come across anything. Is the \overleftrightarrow command already available? If not, what can I do so that I can use it? Thanks, Jesse -- Jesse Alama (alama@stanford.edu) *65: "thesis" is allowed only inside a proof