| expect_valid_table | Test for a valid table |
| getMetadata | Derive metadata from a schema description |
| getNames | Determine the names from a schema description |
| makeSchema | Make a schema description |
| reorganise | Reorganise a table |
| schema | The 'schema' class (S4) and its methods |
| schema-class | The 'schema' class (S4) and its methods |
| schema_default | Default template of a schema description |
| selectData | Select data chunks from a spreadsheet |
| show-method | Print the 'schema' |
| updateSchema | Check schema description for consistency |