| .eval_find | Evaluate .find constructs | 
| .eval_sum | Evaluate .sum constructs | 
| .expect_valid_table | Test for a valid table | 
| .find | Determine row or column on the fly | 
| .sum | Summarise groups of rows or columns | 
| .tidyVars | Match variables | 
| .updateFormat | Update the formating of a table | 
| getClusterVar | Extract cluster variables | 
| getData | Extract summarised data | 
| getGroupVar | Extract cluster group variable | 
| getIDVars | Extract identifying variables | 
| getObsVars | Extract observed variables | 
| 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 | 
| setCluster | Set where the clusters are | 
| setFilter | Set filters | 
| setFormat | Set the specific format of a table | 
| setGroups | Set Groups | 
| setIDVar | Set an identifying variable | 
| setObsVar | Set an observed variable | 
| show-method | Print the 'schema' | 
| tabs2shift | List of table types | 
| validateSchema | Check and update schema descriptions |