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:: ALTER CHECK ::
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Syntax: A(LTER) CH(ECK) [<options>]

With this command you choose which information will be displayed, when you use
the CHECK command. Each option corresponds to one letter. If this letter is
specified the option is set, if this letter is missing the option is not set.
Options can be set/deleted if you put a +/- in front of this option.
Example:   A CH +Y   adds the option Y (show year at the date)

See also HELP OPTION DIR