:SYSTem:HELP:HEADers?
Instrument:
                                                N1010A
                                                N1000A
                                                DCA-M
                                            Meas. mode:
                                                Scope
                                                Eye
                                                Jitter
                                                TDR
                                            Flex Apps:
                                                FlexDCA
                                                FlexRT
                                                FlexPLL
                                            Query Syntax
:SYSTem:HELP:HEADers?
Description
Returns a ASCII string of all FlexDCA programming commands and queries. Each line lists a command or query followed by a carriage return and line feed. If a command does not support a query, the line is ended with the "/nquery/" characters. If command only supports a query, the line is ended with the "/qonly/" characters.  The first line of the returned data is the standard SCPI header for blocks of data. It specifies the data format and how much data will follow.
The following is an example of the first few lines returned by the query:
#6203607 :ACQuire:CDISplay/nquery/ :ACQuire:ECOunt :ACQuire:ECOunt:DEFault :ACQuire:ECOunt:MAXimum :ACQuire:ECOunt:MINimum :ACQuire:ECOunt:STEP/nquery/ :ACQuire:EPATtern :ACQuire:EPATtern:DEFault :ACQuire:EPATtern:TOGGle/nquery/ :ACQuire:EPATtern:VSET?/qonly/ :ACQuire:RLENgth :ACQuire:RLENgth:AUTo :ACQuire:RLENgth:AUTo:DEFault :ACQuire:RLENgth:AUTo:NEXT/nquery/ ………