On Sun, 07 Jan 2018 14:13:11 +0100
Wolfgang Schuster
Reality does not match the manual page you quated. I recommend that you test before you send out manual pages which are not accurate with the actual processing.
The description for the \startxcell command was written two years ago and nothing has changed since then but you have use the \setupxtable command to create a named setup.
Context does not "test" and silently ignores errors, unless they are syntactically incorrect. So unknown keywords and key=value keys are ignored. When one tries to use an "instance" that was not declared, or incorrectly declared, than this usually leads to no effect. Wolfgang made a HUGE effort in combing through ALL of the sources to create the "interface" xml files. He (and others) also work to keep them up to date as the sources evolve. Perhaps before throwing out complaints about the documentation, we (users) should always submit a complete MWE (but it should not contain any unnecessary extra). Quite often, the error is a mixture of keywords with key=value pairs, other times it is an incorrect or misspelled keyword or key, and sometimes it is a real bug or else a missing (and useful) new feature. Alan