sheetjs_sheetjs/docbits/57_wbbook.md

Workbook-Level Attributes

wb.Workbook stores workbook level attributes.

Defined Names

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 (e.g. "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.