/*
  * @param: WdInformation: {
  *      wdNumberOfPagesInDocument: 4
  *  }
  * @return: {PagesCount: number, End: boolean}
  */
  const app = demo.WordApplication()
  const {Enum} = app
  let totalPages = await app.ActiveDocument.Range.Information(Enum.WdInformation.wdNumberOfPagesInDocument)
  if (totalPages.End) {
    // Getting the total number of pages is an async operation. The obtained number of pages is accurate only after `totalPages.End` becomes `true`.
    console.log("All pages are loaded. There are ", totalPages.PagesCount, " pages in total.")
  }

  /*
  * @param: WdInformation: {
  *      wdActiveEndPageNumber: 3
  *  }
  * @return: number
  */
  const app = demo.WordApplication()
  const {Enum} = app
  let currentPage = await app.ActiveDocument.Selection.Information(Enum.WdInformation.wdActiveEndPageNumber)

  /*
  * @param: { What?: WdGoToItem, Which?: WdGoToDirection.wdGoToAbsolute, Count?: number, Name?: string}
  * WdGoToItem: {
  *      wdGoToPage: 1,
  *  }
  *  WdGoToDirection: {
  *      wdGoToAbsolute: 1
  *  }
  * @return: number Return the target page number
  */
  const app = demo.WordApplication()
  const {Enum} = app
  const page = await app.ActiveDocument.Selection.GoTo(Enum.WdGoToItem.wdGoToPage, Enum.WdGoToDirection.wdGoToAbsolute, 10)
  // Or
  const page = await app.ActiveDocument.Selection.GoTo({
    What: Enum.WdGoToItem.wdGoToPage,
    Which: Enum.WdGoToDirection.wdGoToAbsolute,
    Count: 10
  })

  /*
  * @param: bool
  * Valid values: `true` (yes); `false` (no).
  */

  // Hide comments.
  demo.WordApplication().ActiveDocument.ActiveWindow.View.ShowComments = false

  /*
  * @param: bool
  * Valid values: `true` (yes); `false` (no).
  */

  // Hide the table of contents.
  demo.WordApplication().ActiveDocument.ActiveWindow.DocumentMap = false

  /*
  * @return: number
  */
  await demo.WordApplication().ActiveDocument.ActiveWindow.View.Zoom.Percentage  // Read the view zoom level.

  /*
  * @param : 50 <= number <= 300 (The zoom level is between 50% and 300%.)
  */
  demo.WordApplication().ActiveDocument.ActiveWindow.View.Zoom.Percentage = 100  // Set the view zoom level.

const app = demo.ExcelApplication()
const Names = []
const count = await app.Sheets.Count;
for(let index = 1; index <= count; index++) {
  Names.push(await app.Sheets.Item(index).Name);
}
console.log(Names)

const app = demo.ExcelApplication()
const name = await app.ActiveSheet.Name

const app = demo.ExcelApplication()
const sheetIndex = 1 // Sheet number, which starts from 1.
app.Sheets.Item(sheetIndex).Activate() // Switch the sheet.

  /*
  * @return: number
  */
  await demo.ExcelApplication().ActiveWorkbook.ActiveSheetView.Zoom	// Read the view zoom level.
  /*
  * @param : 10 <= number <= 500 (The zoom level is between 10% and 500%.)
  */
  demo.ExcelApplication().ActiveWorkbook.ActiveSheetView.Zoom = 100	// Set the view zoom level.

  /*
  * @return: number
  */
  let totalPages = await demo.PPTApplication().ActivePresentation.Slides.Count

  /*
  * @return: number
  */
  let totalPages = await demo.PPTApplication().ActivePresentation.SlideShowWindow.View.Slide.SlideIndex

  /*
  * @param: number
  */
  await demo.PPTApplication().ActivePresentation.SlideShowWindow.View.GotoSlide(3)	// Go to page 3.

await demo.PPTApplication().ActivePresentation.SlideShowSettings.Run()

await demo.PPTApplication().ActivePresentation.SlideShowWindow.View.Exit()

  await demo.PPTApplication().ActivePresentation.SlideShowWindow.View.GotoNextClick()

  await demo.PPTApplication().ActivePresentation.SlideShowWindow.View.GotoPreClick()

  /*
  * @return: string ('preview' | 'play')
  */
  let currentState = await demo.PPTApplication().ActivePresentation.SlideShowWindow.View.State

  /*
  * @return: number
  */
  await demo.PPTApplication().ActivePresentation.View.Zoom	// Read the view zoom level.
  /*
  * @param : 1 <= number <= 400 (The zoom level is between 1% and 400%.)
  */
  demo.PPTApplication().ActivePresentation.View.Zoom = 100	// Set the view zoom level (non-play mode).

  /*
  * @return: number
  */
  let totalPages = await demo.PDFApplication().ActivePDF.PagesCount

  /*
  * @return: number
  */
  let totalPages = await demo.PDFApplication().ActivePDF.CurrentPage

  /*
  * @param : { PageNum: number }
  */
  let PageNum = 10
  await demo.PDFApplication().ActivePDF.JumpToPage({PageNum})

  /*
  * 1: Single-page mode
  * 0: Multi-page mode
  */

  demo.PDFApplication().ActivePDF.PageMode = 1	  // Set the single-page mode.

  /*
  * true: Show the table of contents
  * false: Hide the table of contents
  */
  demo.PDFApplication().ActivePDF.DocumentMap = true	// Show the table of contents.

  /*
  * @return: number
  */
  await demo.PDFApplication().ActivePDF.Zoom  // Read the view zoom level.
  /*
  * @param : 1 <= number <= 400 (The zoom level is between 1% and 400%.)
  */
  demo.PDFApplication().ActivePDF.Zoom = 100  // Set the view zoom level.

demo.on('Event name', function(data) {
    // do something...
})