Add another worksheet.
Add, modify or remove cell comment.
Insert a mathematical function. See the section Formulae for more details.
Insert a series. See the section Series for more details.
Insert a link into the selected cell. See the section Link Cells for more details.
This feature is not yet fully implemented.
Insert a chart. See the section Inserting a Chart for more details.
Insert data from a text file, database or from the clipboard. See the section Inserting External Data for more details.