docs.sheetjs.com/docbits/57_wbbook.md

Workbook-Level Attributes

wb.Workbook stores workbook-level attributes.

Defined Names

Format Support (click to show)

Defined Names: XLSX/M, XLSB, BIFF8 XLS, XLML, SYLK

Unicode Defined Names: XLSX/M, XLSB, BIFF8 XLS, XLML

Defined Name Comment: XLSX/M, XLSB, BIFF8 XLS

wb.Workbook.Names is an array of defined name objects which have the keys:

Defined Name Properties (click to show)

Key	Description
Sheet	Name scope. Sheet Index (0 = first sheet) or null (Workbook)
Name	Case-sensitive name. Standard rules apply **
Ref	A1-style Reference ("Sheet1!$A$1:$D$20")
Comment	Comment (only applicable for XLS/XLSX/XLSB)

Excel allows two sheet-scoped defined names to share the same name. However, a sheet-scoped name cannot collide with a workbook-scope name. Workbook writers may not enforce this constraint.

Workbook Views

wb.Workbook.Views is an array of workbook view objects which have the keys:

Key	Description
RTL	If true, display right-to-left

Miscellaneous Workbook Properties

wb.Workbook.WBProps holds other workbook properties:

Key	Description
CodeName	VBA Project Workbook Code Name
date1904	epoch: 0/false for 1900 system, 1/true for 1904
filterPrivacy	Warn or strip personally identifying info on save