Workstation routines
| clear | Clears the given workstation objects. |
| frame | Updates and clears the given workstation objects. |
| NhlChangeWorkstation | Changes the output workstation of one or more NCL View objects. |
| NhlClearWorkstation | Clears the given workstation objects. |
| NhlFrame | Updates and clears the given workstation objects. |
| NhlGetParentWorkstation | Returns the ids of the parent workstations of the given objects. |
| NhlIsWorkstation | Returns True for each given object that is a Workstation object. |
| NhlUpdateWorkstation | Updates the given workstation objects. |
| update | Updates the given workstation objects. |