Sheets contain text in a table and can be used to store any kind of tabular data from an address book to recording health statistics to employee timesheets. They are made up of records, defined by parameters displayed as a form or columns. For example, a simple sheet could contain a table of peoples' name, title, and department.

When you create a sheet or make changes to the sheet columns via the Column Editor, you will specify the column names and their types. An explanation of the data types can be found in the Data section of the appendix.

Sheets can be displayed as a table or a form via the View > Document Display menu or using the and buttons in the navigation bar. The table view is similar to standard spreadsheet views. Form view is similar to the record view e.g., in FileMaker.

Use sheets like any other document. Add new rows using Tools > Sheets > Add Record, delete rows by selecting them and using Edit > Delete. Alternatively, use the contextual menu. Click a cell to edit its content, press the ⎋ Escape key to stop editing, and use the ⇥ Tab or ↩ Return keys to navigate from cell to cell. Hold the ⌘ Command key to activate a link in a cell.

If you import tab or comma-delimited files, e.g., CSV or TSV files, they will be imported and displayed as sheets. Sheets can also be created via Data > New > Sheet. You will just need to provide starting column headings, which you can certainly add or take away from later.