| %!in% | NOT IN |
| .initOps | Initialize operators |
| can.operator | can.operator |
| fun2name | Convert between a function and its name and vice versa. |
| inverse | Invert an R operator |
| inverse.function | Invert an R operator |
| inverse.name | Invert an R operator |
| is.operator | Utilities for operators |
| name2fun | Convert between a function and its name and vice versa. |
| notin | NOT IN |
| operator.type | Return the type for an operator. |
| operator.type.function | Return the type for an operator. |
| operator.type.name | Return the type for an operator. |
| operators | Return the _names_ of defined operators. |
| rel.type | Get the relational type of a relational operator. |
| rel.type.call | Get the relational type of a relational operator. |
| rel.type.expression | Get the relational type of a relational operator. |
| rel.type.function | Get the relational type of a relational operator. |
| rel.type.name | Get the relational type of a relational operator. |
| removeOperator | Unregister a an operator. |
| setOperator | Registers an operator for use with operator.tools package. |
| setOperators | Registers an operator for use with operator.tools package. |