1 Introduction

The Excel Binary File Format (.xlsb) Structure is a collection of records and structures that specify workbook content, which can include unstructured or semi-structured tables of numbers, text, or both numbers and text, formulas, external data connections, charts and images. Workbook content is typically organized in a grid based layout, and often includes numeric data, structured data, and formulas.

Sections 1.7 and 2 of this specification are normative. All other sections and examples in this specification are informative.