The workbook window is created from a customizable template, including the workbook templates, workbook files and analysis templates.
All Origin workbook templates are named with the OTW or OTWU file extension. The workbook template stores a variety of information, including the number of worksheets in the workbook, the names of the worksheet columns and the types of data they store, import-handling instructions, math functions and worksheet style and format options.
The workbook files and analysis templates you saved are special workbooks named with the OGW or OGWU file extension. They are capable of storing raw data(not for analysis templates), metadata, mathematical formulae, scripts, analysis results (including graphs and matrix) and complex information with Origin's Recalculate analysis feature.