[NTG-context] Code in contextref-env.tex

In the file contextref-env.tex I find code like the following: \setupsectionblock[\v!frontpart] [\c!page=\v!yes] \setupsectionblock[\v!bodypart] [\c!page=\v!yes] \setupsectionblock[\v!appendix] [\c!page=\v!yes] \setupsectionblock[\v!frontpart] [\c!before=,\c!after=] I have no idea what the sequences like "\v!"and "\c!" etc. mean. Are they references to modes? -- John Culleton Free list of books for self-publishers: http://wexfordpress.net/shortlist.html Police Procedural and Expose: "Death Wore Black" "Create Book Covers with Scribus" http://www.booklocker.com/books/4055.html