Issue a DS9 command, raising errors as appropriate.
- Parameters
- 
- cmdstr, optional
- Command to execute. 
- trapbool, optional
- Trap errors. 
- flushbool, optional
- Flush the output. 
- silentbool, optional
- Do not print trapped error messages. 
- frameint, optional
- Frame number on which to execute command. 
- getbool, optional
- Return xpa response.