text: export const PAGE_TO_STRING = 'page/toString'
  export const PAGE_TO_CSS = 'page/toCSS'
  export const PAGE_COLORVIEW_TO_CSS = 'page/colorview/toCSS'
  export const PAGE_CACHE_TO_CSS = 'page/cache/toCSS'
  export const PAGE_CACHE_TO_STRING = 'page/cache/toString'