 { $description "Adds the duration to the beginning of Unix time and returns the result as a timestamp." } ;
 
 ARTICLE: "calendar" "Calendar"
-"The two data types used throughout the calendar library:"
+"The " { $vocab-link "calendar" } " vocabulary defines two data types and a set of operations on them:"
 { $subsections
     timestamp
     duration

    now
    gmt
}
"Converting between timestamps:"
{ $subsections
    >local-time
    >gmt
}
"Converting between timezones:"
{ $subsections convert-timezone }
"Timestamps relative to each other:"
{ $subsections "relative-timestamps" }
"Operations on units of time:"

    "months"
    "days"
}
"Both " { $link timestamp } "s and " { $link duration } "s implement the " { $link "math.order" } "."
$nl
"Meta-data about the calendar:"
{ $subsections "calendar-facts" } ;

ARTICLE: "timestamp-arithmetic" "Timestamp arithmetic"
"Adding timestamps and durations, or durations and durations:"
