Am 30.04.2009 um 12:45 schrieb Vyatcheslav Yatskovsky:

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"In a recent MkIV you even have the option to enable a key-val-checkers which mention invalid keys on the terminal."

Oh, dear! How!?

Example: \usemodule[letter] \enablecheckparameters \starttext \setupletterstyle[subject][style=bold,foo=bar] \startletter[subject=Subject] \input knuth \stopletter \stoptext Log file: syntax : invalid key 'foo' for 'lettersection:subject' in line 8 Wolfgang