By default, all names and titles in Pivot are defined in English, but you can set any other language by specifying a custom locale for the page.

webix.i18n.pivot = {
    columns: "Columns",
    count: "count",
    fields: "Fields",
    filters: "Filters",
    max: "max",
    min: "min",
    operationNotDefined: "Operation is not defined",
    pivotMessage: "[Click to configure]",
    rows: "Rows",
    select: "select",
    sum: "sum",
    text: "text",
    values: "Values",
    windowTitle: "Pivot Configuration",
    windowMessage: "[move fields into required sector]",
    apply: "Apply",
    cancel: "Cancel"
// and then initialize Pivot and see your custom names

Related sample:  Localization

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