title: $:/plugins/tiddlywiki/xlsx-utils/docs/workbook !!! Workbook Import Specifications Each workbook import specification describes how spreadsheets of a particular format should be converted into individual tiddlers. Create a new workbook for each type of spreadsheet that you will be working with. Workbooks contain a list of sheet import specifications that describe how individual sheets of the workbook should be handled. Each workbook has a caption that you can use to describe its purpose.