[NTG-context] all about \about

The \about cross reference command woks ok if I use \about[aa] It delivers the title (or part of it in this case) of the section marked aa. but when I try to give it some text it blows up on the text, e.g., \about{foo}[aa] So what if anything goes between the { and the }? What purpose do they serve? -- John Culleton Resources for every author and publisher: http://wexfordpress.com/tex/shortlist.pdf http://wexfordpress.com/tex/packagers.pdf http://www.creativemindspress.com/newbiefaq.htm http://www.gropenassoc.com/TopLevelPages/reference%20desk.htm